MB89945PF データシートの表示（PDF） - Fujitsu

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MB89945PF

8-bit Proprietary Microcontroller

Fujitsu 

MB89940 Series

s PRODUCT LINEUP

Part number

Item

MB89943

MB89945

MB89P945

MB89PV940

Classification

Mass-produced products

(mask ROM products)

One-time PROM

Piggyback

ROM size

8 K × 8 bits

16 K × 8 bits

16 K × 8 bits

32 K × 8 bits

(internal mask ROM) (internal mask ROM) (internal ROM) (external on piggyback)

RAM size

CPU functions

512 × 8 bits

The number of instructions: 136

Instruction cycle:

0.5 µs*1@8 MHz

Interrupt response time: 4.0 µs*1@8 MHz

Multiply instruction time: 19 instruction cycles

Divide instruction time:

21 instruction cycles

Direct addressing memory-to/from-register data transfer:

7 instruction cycles

1 K × 8 bits

Ports

Output:

Input/Output:

5-bit N-ch open-drain

Two 8-bit CMOS schmitt I/Os and 8-bit CMOS I/Os

Timebase timer

21 bits

Interrupt interval: 1 ms, 4.1 ms, 32.8 ms or 524.3 ms

8-bit/16-bit timer

Watchdog Reset

Can be used as two 8-bit timers or one 16-bit timer

Operation clock: 1 µs, 16 µs, 256 µs or external *1

Reset interval: Approx. 524 ms to 1049 ms

Stepping motor

controller

8-bit PWM timers

Two 8-bit PWM pulse generators

Synchronized 4-channel high current output

Operation clock: 250 ns, 500 ns, 1 µs or 4 µs*1

Two 8-bit PWM timers

External interrupt

3 channels, selective positive edge or negative edge trigger

A/D converter

LCD controller

8-bit resolution, two-channel input

A/D conversion time : (MB89943/945 : 26 µs*1/8 MHz oscillation,

MB89P945/MB89PV940 : 22 µs*1/8MHz oscillation)

4-common and 17-segment outputs

Number of outputs programmable

Low supply voltage

reset

Autonomous reset when low supply voltage

Reset voltage: 3.3 V, 3.6 V, 4.0 V

External voltage

monitor interrupt

Interrupts when voltage at external pin is lower than the reference voltage

Standby modes

Stop mode and sleep mode

Operating

voltage*2

3.5 V to 5.5 V

Process

CMOS

External EPROM

MBM27C256A-20TVM

*1: Execution times and clock cycle times are dependent on the use of MCU.

*2: Varies with conditions such as the operating frequency. (See section “s Electrical Characteristics.”) In the case

of the MB89PV940, the voltage varies with the restrictions of the EPROM for use.

2

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