Semiconductor

ML63293

Preliminary Ver.1.1

Feb.10,1999

3 of 5

· Multiplier / divider circuits

Multiplier

: ( 8 bits )

× ( 8 bits ) → Product ( 16bits )

Divider

: ( 16 bits )

/ ( 8 bits ) → Quotient ( 16bits ), Remainder ( 8 bits )

· System reset function

System reset by RESET pin

System reset by power-on detection

System reset by detection that low-speed clock has stopped oscillation

· Battery check

Function that detects battery low voltage

Selection of judgment voltage by software ( LD1 and LD0 bit settings of BLDCON )

LD1

LD0

Judgement voltage ( V )

Comments

1

0

1.80

± 0.10

Ta=25

°C

1

1

2.40

± 0.10

Ta=25

°C

· Timers and Counter

8-bit timer

: 4 channels

Selectable as auto-reload mode, capture mode,

clock frequency measurement mode

Watchdog timer

: 1 channel

100Hz timer

: 1 channels

1/100 sec. Measurement possible

15-bit time-base counter

: 1Hz, 2Hz, 4Hz, 8Hz, 16Hz, 32Hz, 64Hz, and 128Hz

signals

can be read

· Serial port

Mode

: Selectable as UART mode, synchronous mode

UART communication speed

: 1200 bps, 2400 bps, 4800 bps, 9600bps

Clock frequency in synchronous mode :

Internal clock mode (32.768kHz ), External clock frequency

Data length

: 5 to 8 bits

· Shift register

Shift clock

: System clock

× 1, × 1/2,

Timer 1 overflow ( 16-bit timer mode ), External clock

Data length

: 8 bits

· Interrupt sources

External interrupt

: 5

Internal interrupt

: 14