

                      MV1200 V1.47 SPECIFICATION


FEATURES
--------

- On-Chip Oscillator for ZERO External Components
- Fully Static Operation, 0 - 20 MHz
- Supply Voltage: 2.7 - 7.0V,  Operating Current as low as 10 microamps
- High Performance and Low Power RISC Architecture
- 89 Powerful Instructions - Single Clock Cycle Execution
- 1K bytes of In-System Reprogrammable Downloadable Flash
- 64 bytes EEPROM
- Endurance: 100,000 Write/Erase Cycles
- 32 x 8 General Purpose Working Registers
- 15 Programmable I/O Lines
- Instruction Cycle Time: 50 ns @ 20 MHz
- One 8-Bit Timer/Counter with Separate 10 bit Prescaler
- External and Internal Interrupt Sources
- Programmable Watchdog Timer with Separate On-Chip Oscillator
- On-Chip Analog Comparator
- Low Power Idle and Power Down Modes
- Programming Lock for Software Security
- 20-Pin Device






INTRODUCTION
------------

The MV1200/MV8515 advanced RISC architecture has significant advantages
over other micro-controllers.  These include lower cost, higher
performance, and easier programming.  The 1200 is the only chip of its type
capable of running with ZERO external components.  No crystal, caps, or
external memory are needed.  A crystal version is available however at the
same price (MV1200a).  Because of longer instruction word and because the
clock is not divided down internally it runs about 10 times faster than
PIC, Z80, or 8051 type controllers at the same clock frequency.  Another
advantage is built-in BASIC like "Stamp" type circuit board modules except
CPU, memory, and oscillator components are in a single IC and more ports
are available.  The current interpreter stores considerably more internal
BASIC instructions than the original.  Programs are downloaded from a PC
over an RS232 port.  Special development kits are not required.

The MV1200 has six serial input/output bits, 8 bidirectional parallel port
bits, and an Analog-to-Digital Comparator that are supported by the BASIC
interpreter.  An 8 bit Digital-to-Analog Converter (DAC) is also available
in addition to a hardware Real-Time-Clock (RTC).  The chip can be
programmed in Assembly.  In this case 15 general I/O bits, a precision
analog comparator, and a high resolution timer/counter are available.

The MV8515 has six serial input/output bits, 24 bidirectional parallel port
bits, an Analog-to-Digital Converter (ADC), and a synchronous serial bus
(SPI, I2C, etc.) supported by the BASIC interpreter.  Up to 32 DAC
(Digital-to-Analog Converter) channels are also available in addition to a
RTCC (Real-Time-Calendar-Clock).  This chip can be programmed in Assembly
too.  In this case with 32 general I/O bits, high speed timer/counters, 2
UARTS, and a precision analog comparator.

These products are intended for low end applications and education in the
area of embedded controllers.  For more complex tasks a "Credit Card
Computer" is available (CCC) with 256k/4m non-volatile memory, high speed
4ch ADC, enhanced BASIC instructions, "Plug-N-Go" download, Single-wire
Multi-drop Long-distance Network (SMPLNET), and ISA bus for PC adapter
cards (modem, video, PCMCIA, etc.).  For high end applications MVS has a
line of PC compatible 8088 and 386 Single Board Computers with up to 64
Mbyte memory capacity and DOS.  See PRICELST.TXT or the website for info.




BASIC INTERPRETER
-----------------

v=x[#x#x..]   assign expression,# is +,-,&(and),|(or),*{^(xor),*(mult),/(div)}
adc v        *get analog value from A to D Converter into var, 0=0v...255=5v
baud x        set baud rate, @7.3728mhz 253=9.6k 122=19.2 18=115.2 etc.
clear         set variables to default: a=0, b=32, c=0, d=56(PORTB) *SYSCON=6
data k,k...   define data, 3 byte header, access via read/write, default b=32
defio x       set i/o pointer (d) for inp/out, default=56(PORTB), see i/o map
defmem x      set nvmem byte pointer (b) for read/write, default b=32
end           power down til interrupt or reset, re-starts from beginning
erase         (CCC2 only) erase flash block, block number set by pc0-2
for c=0 to k  for/next loop part 1 (sets loop point and counter for "next")
gosub k       unconditional subroutine call to line, use ret to return (+-8K)
goto k        unconditional jmp to line (pushes ret adr,same as gosub w/o ret)
if v#x then k conditional goto line, # is =,>,<,! (jmp range +-1K)
inp v         get port pointed to by defio (d) to variable, use PINB not PORTB
input v       get 3 digit decimal number from active serial into var
next c        for/next part 2, c=c+1 if c<k then loop (range is -32),see "for"
open k        set active serial port (0x01=com1 0x04=com2 0x10=com3 0x40=com4)
out x         output to i/o reg pointed to by defio (d), default d=56(PORTB)
print x       send number out active serial port, *format depends on SYSCON
pwm x         send 256cycles@10khz out PWM pin, x=pwm hi time, 0=0v..255=5v
read v        read byte from nv mem into var, auto-inc b, default b=32
ret           return from gosub, far only (>15 bytes between gosub and ret)
serin v       get serial byte from active com port into var
serin1 v      get serial byte from rx1
serin2 v      get serial byte from rx2
serin3 v      get serial byte from rx3
serin4 v      get serial byte from rx4 (port direction must be changed)
serout x      send serial byte out active com port
serout1 x     send serial byte out tx1
serout2 x     send serial byte out tx2
serout3 x     send serial byte out tx3
serout4 x    *send serial byte out tx4
sleep x       pause for 1-256 tics (16ms-4sec), picks up where it left off
sound x       make 256 cycle tone on tx1 (o.c.), 0=40khz 1=20khz...255=156hz
ssin v       *get synchronous serial byte into var (SPI/I2C, clk=pd7 dat=pb2)
ssout x      *send synchronous serial byte (SPI/I2C, clk=pd7 dat=pb2)
sstart       *send I2C start signal (clk hi,dat lo,clk lo), use w/ssin-ssout
sstop        *send I2C stop  signal (clk hi,dat hi,clk lo), use w/ssin-ssout
syscon k     *set config options (bit4-3=print format,2-0=pwmbit),default=06
test bit k    test pd0/2/*4/*6, if not 0 jmp to line (+-16)
toggle bit    make bit pd0-7 change its state
write x       write to nv memory, auto-inc bptr (b), default b=32

  k=constant: decimal (0-255), ASCII (' '-'z'), or hex (0x0-0xff)
  v=variable (a-h) 8 bit 
  x=variable or constant                    *MV8515 only




I/O MAP
-------

 dec(hex)asm name   bit7   bit6   bit5   bit4   bit3   bit2   bit1   bit0
  8 (08)    BAUD   7.3728mhz: 9.6k=253 19.2=125 38.4=61 57.6=40 115.2=18
  9 (09)    BPTRH  free RAM register in 1200, buffer pointer hi in 8515
 11 (0B)           free RAM register in 1200
 26 (14)    SYSCON free RAM in 1200     PRNFMT PRNFMT PWMBIT PWMBIT PWMBIT 
 27 (1B)    SERBIT active serial port (0x01=com1 04=com2 10=com3 40=com4)
 29 (1D)           free RAM register in 1200
 31 (1F)           free RAM register in 1200
 40 (28) 08 ACSR   ACD    -      ACO    ACI    ACIE   ACIC   ACIS1  ACIS0
*41 (29) 09 UBRR   UART Baud Rate Register
*42 (2A) 0A UCR    RXCIE  TXCIE  UDRIE  RXEN   TXEN   CHR9   RXB8   TXB8
*43 (2B) 0B USR    RXC    TXC    UDRE   FE     OR     -      -      -
*44 (2C) 0C UDR    UART I/O Data Register 
*45 (2D) 0D SPCR   SPIE   SPE    DORD   MSTR   CPOL   CPHA   SPR1   SPR0 
*46 (2E) 0E SPSR   SPIF   WCOL   -      -      -      -      -      -
*47 (2F) 0F SPDR   SPI Data Register 
*48 (30) 10 PIND   PIND7  PIND6  PIND5  PIND4  PIND3  PIND2  PIND1  PIND0 
 49 (31) 11 DDRD   DDD7   DDD6   DDD5   DDD4   DDD3   DDD2   DDD1   DDD0 
*50 (32) 12 PORTD  PORTD7 PORTD6 PORTD5 PORTD4 PORTD3 PORTD2 PORTD1 PORTD0
*51 (33) 13 PINC   PINC7  PINC6  PINC5  PINC4  PINC3  PINC2  PINC1  PINC0 
*52 (34) 14 DDRC   DDC7   DDC6   DDC5   DDC4   DDC3   DDC2   DDC1   DDC0 
*53 (35) 15 PORTC  PORTC7 PORTC6 PORTC5 PORTC4 PORTC3 PORTC2 PORTC1 PORTC0 
 54 (36) 16 PINB   PINB7  PINB6  PINB5  PINB4  PINB3  PINB2  PINB1  PINB0 
 55 (37) 17 DDRB   DDB7   DDB6   DDB5   DDB4   DDB3   DDB2   DDB1   DDB0 
 56 (38) 18 PORTB  PORTB7 PORTB6 PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0 
*57 (39) 19 PINA   PINA7  PINA6  PINA5  PINA4  PINA3  PINA2  PINA1  PINA0 
*58 (3A) 1A DDRA   DDA7   DDA6   DDA5   DDA4   DDA3   DDA2   DDA1   DDA0 
*59 (3B) 1B PORTA  PORTA7 PORTA6 PORTA5 PORTA4 PORTA3 PORTA2 PORTA1 PORTA0 
*60 (3C) 1C EECR   -      -      -      -      -      EEMWE  EEWE   EERE 
*61 (3D) 1D EEDR   EEPROM Data Register 
*62 (3E) 1E EEARL  EEPROM Address Register 
*63 (3F) 1F EEARH  EEPROM Address Register 
*65 (41) 21 WDTCR  -      -      -      WDTOE  WDE    WDP2   WDP1   WDP0 
*68 (44) 24 ICR1L  Timer/Counter1 Input Capture Register Low Byte 
*69 (45) 25 ICR1H  Timer/Counter1 Input Capture Register High Byte 
*72 (48) 28 OCR1BL Timer/Counter1 Output Compare Register B Low Byte 
*73 (49) 29 OCR1BH Timer/Counter1 Output Compare Register B High Byte 
*74 (4A) 2A OCR1AL Timer/Counter1 Output Compare Register A Low Byte 
*75 (4B) 2B OCR1AH Timer/Counter1 Output Compare Register A High Byte 
*76 (4C) 2C TCNT1L Timer/Counter1 Counter Register Low Byte 
*77 (4D) 2D TCNT1H Timer/Counter1 Counter Register High Byte 
*78 (4E) 2E TCCR1B ICNC1  ICES1  -      -      CTC1   CS12   CS11   CS10 
*79 (4F) 2F TCCR1A COM1A1 COM1A0 COM1B1 COM1B0 -      -      PWM11  PWM10 
 82 (52) 32 TCNT0  Timer/Counter0  8 Bit  
*83 (53) 33 TCCR0  -      -      -      -      -      CS02   CS01   CS00 
*85 (55) 35 MCUCR  SRE    SRW    SE     SM     ISC11  ISC10  ISC01  ISC00 
*88 (58) 38 TIFR   TOV1   OCF1A  OCF1B  -      ICF1   -      TOV0   -
*89 (59) 39 TIMSK  TOIE1  OCIE1A OCIE1B -      TICIE1 -      TOIE0  -
*90 (5A) 3A GIFR   INTF1  INTF0 
*91 (5B) 3B GIMSK  INT1   INT0   -      -      -      -      -      - 
*93 (5D) 3D SPL    SP7    SP6    SP5    SP4    SP3    SP2    SP1    SP0 
*94 (5E) 3E SPH    SP15   SP14   SP13   SP12   SP11   SP10   SP9    SP8 
*95 (5F) 3F SREG   I      T      H      S      V      N      Z      C
*96-101 (60-65)  SEC,MIN,HR,DAY,MO,YR  RTCC (Real-Time-Calendar-Clock)
*105-255 (69-ff) USER NVRAM, contents preserved in power down mode ("end")

                  *MV8515 only




PINOUT
------

    RESETL-1  20-VCC
   RX1/PD0-2  19-PB7
   TX1/PD1-3  18-PB6
        NC-4  17-PB5
        NC-5  16-PB4
   RX2/PD2-6  15-PB3
   TX2/PD3-7  14-PB2
   RX3/PD4-8  13-PB1/ADCIN1
   TX3/PD5-9  12-PB0/ADCIN0
       GND-10 11-PD6/DACOUT




ABSOLUTE MAXIMUM RATINGS
------------------------

Operating Temperature ........................ -55C to +125C 

 NOTICE: Stresses beyond those listed under Absolute Maximum Ratings may
 cause permanent damage to the device.  This is a stress rating only and
 functional operation of the device at these or other conditions beyond
 those indicated in the operational sections of this specification is not
 implied.  Exposure to absolute maximum rating conditions for extended
 periods may affect device reliability.  
 
 Storage Temperature......................................  -65C to +150C 
 Voltage on any Pin except RESET with respect to Ground ..  -1.0V to +7.0V 
 Maximum Operating Voltage................................  7.0VDC 
 Current per I/O Pin......................................  40.0 mA DC 
 Current VCC and GND Pins.................................  140.0 mA 




DC CHARACTERISTICS
------------------

TA = -40C to 85C, VCC = 2.7V to 7.0V (unless otherwise noted)

Under steady state (non-transient) conditions, IOL must be externally limited:
 Maximum IOL per port pin: 20mA
 Maximum total IOL for all output pins: 80mA
 If IOL exceeds the test condition, VOL may exceed the related specification.
 Pins are not guaranteed to sink current greater than the listed test
 conditions.

Minimum VCC for Power Down is 2V.

Value tested to 45C

Symbol Parameter          Conditions              Min    Typ    Max     Units
VIL  Input Low Voltage                            -0.2   .2   VCC-0.1    V
VIH  Input High Voltage (Except XTLIN, RESET)    .2    VCC+.9 VCC+.5     V
VIH1 Input High Voltage (XTLIN, RESET)           0.7     VCC  VCC+.5     V
VOL  Output Low Voltage  IIL=25mA VCC=5V                       0.5       V
VOH  Output High Voltage IOH=3mA VCC=5V          VCC-.5                  V
IOH  Output Source Current VCC=5V VOH=4.5V                4              mA
IIL  Output Sink Current VCC=5V VOL=0.5V                  28             mA
RRST Reset Pull-Up Resistor                       100          500      kohm
RI/O Pin Pull-Up Resistor                          35          120      kohm
ICC  Supply Current Active Mode 5V 4MHz                   2              mA
                    Active Mode 3V 32Khz                 10              uA
                    Idle Mode 3V 4MHz                    500             uA
                    Power Down WDT enabled 3V            10     15       uA
                    Power Down WDT disabled 3V          0.15     1       uA
VACIO Analog Comparator Offset Voltage VCC=5V                   20       mV
IACLK Analog Comparator Leakage Current VIN=1V           10              nA
tACPD Analog Comparator Propagation Delay VCC=5V         500             ns

External Clock Drive
Symbol Parameter                         VCC=2.7V          VCC=7.0V     Units
                                         Min Max            Min Max
1/tCLCL Oscillator Frequency              0   4              0  20       MHz
tCLCL Clock Period                       250               50.0          ns
tCHCX High Time                           40               16.7          ns
tCLCX Low Time                            40               16.7          ns
tCLCH Rise Time                              10                 4.15     ns
tCHCL Fall Time                              10                 4.15     ns




                         LIMITED WARRANTY 

MVS will repair free of charge product suffering from manufacturing defects
for a period of 5 years after shipping.  This will be done only if it has
been determined by MVS that the product has not been misused (improper
voltages, physical alteration, etc.).  Otherwise a minimum service charge
is required.  In either case it is necessary to contact MVS for a Returned
Merchandise Authorization (RMA) number before shipping the unit.

