MB89F538 View Datasheet(PDF) - Fujitsu

Part Name

Description

Manufacturer

MB89F538

8-bit Original Microcontroller CMOS

Fujitsu 

MB89530A Series

■ PRODUCT LINEUP

Part number

Parameter

MB89535A

MB89537A/

537AC

MB89538A/

538AC

MB89F538

MB89P538

MB89PV530

Type

Mass produced (MASK ROM)

Flash product

One-time

programmable

product

Evaluation

product

ROM capacity

16 Kbytes ×

8-bit

(built-in

ROM)

32 Kbytes ×

8-bit

(built-in

ROM)

48 Kbytes ×

8-bit

(built-in

ROM)

48 Kbytes × 48 Kbytes ×

8-bit

8-bit

(built-in Flash) (built-in ROM)

(write from

(write from

general purpose general purpose

EPROM writer) EPROM writer)

48 Kbytes × 8-bit

(external ROM) *2

RAM capacity

512 bytes × 1 Kbyte ×

8-bit

8-bit

2 Kbytes × 8-bit

Operating

voltage

2.2 V to 5.5 V *1

(MB89535A/537A/538A/537AC/538AC)

3.5 V to 5.5 V

2.7 V to 5.5 V

2.7 V to 5.5 V

CPU functions

Basic instructions

: 136

Instruction bit length

: 8 bits

Instruction length

: 1 bit to 3 bits

Data bit length

: 1, 8, 16 bits

Minimum instruction execution time : 0.32 µs / 12.5 MHz

Minimum interrupt processing time : 2.88 µs / 12.5 MHz

Ports

Input ports

: single-clock system : 5 (4 also usable as external interrupts)

dual-clock system : 3 (3 also usable as external interrupts)

Output-only ports (N-ch open drain)

: 8 (8 also usable as A/D converter input)

I/O ports (N-ch open drain) : 2 (2 also usable as SO2/SDA or SI2/SCL)

I/O ports (CMOS) (Except MB89F538)

: 38

I/O ports (CMOS) (MB89F538)

: 37 (21 have no other function)

Total (except MB89F538) : single-clock system : 53

dual-clock system : 51

Total (MB89F538)

: single-clock system : 52

dual-clock system : 50

Time base

timer

21 bits

Interrupt periods at main clock oscillation frequency of 12.5 MHz

(approx. 0.655 ms, 2.621 ms, 20.97 ms, 335.5 ms)

Watchdog

timer

Reset period of approx. 167.8 ms to 335.6 ms at main clock frequency of 12.5 MHz

Reset period of approx. 500 ms to 1000 ms at sub clock frequency of 32.768 kHz.

PWM timer

8-bit interval timer operation

(supports square wave output, operating clock period : 1, 8, 16, 64 tinst*3)

Pulse width measurement with 8-bit resolution (conversion period : 28 tinst*3 to 28 × 64 tinst*3)

2 channels (can also be used as interval timer, can also be used as ch.1 output and ch.2 count

clock)

Watch prescaler

Interval times at 17-bit sub clock base frequency of 32.768 kHz

(approx. 31.25 ms, 0.25 s, 0.50 s, 1.00 s, 2.00 s, 4.00 s)

(Continued)

3

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