MB89990 데이터 시트보기 (PDF) - Fujitsu

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MB89990

8-bit Proprietary Microcontroller

Fujitsu 

MB89990 Series

(Continued)

• External interrupts

Edge detection (Edge selection enabled): 3 channels

Low-level interrupt (Wake-up function): 8 channels

• Internal remote-control transmission frequency generator

• Low-power consumption modes

Stop mode (Almost no current consumption occurs because oscillation stops.)

Sleep mode (The current consumption is about 1/3 of that during normal operation because the CPU stops.)

• Packages

SOP-28 and SH-DIP-28

s PRODUCT LINEUP

Part number

Item

MB89997

MB89P195*1

MB89PV190*2

Classification

Mass-produced products

(mask ROM products)

One-time PROM product

For development and

evaluation

ROM size

32 K × 8 bits

(internal mask ROM)

16 K × 8 bits

(internal PROM, to be

programmed with general-

purpose EPROM

programmer)

32 K × 8 bits

(external ROM)

RAM size

128 × 8 bits

256 × 8 bits

CPU functions

The number of basic instructions:

Instruction bit length:

Instruction length:

Data bit length:

Minimum execution time:

Interrupt processing time:

136

8 bits

1 to 3 bytes

1, 8, and 16 bits

0.95 µs at 4.2 MHz

8.57 µs at 4.2 MHz

Ports

I/O port (N channel open drain):

I/O port (CMOS):

Total:

6

16 (13 serves as resources)

22

8/16-bit timer/

counter

2 channels for 8-bit timer counter or for 16-bit event counter (operation clock: 1.9 µs, 30.4

µs, and 487.6 µs at 4.2 MHz, and external clock)

External interrupt 1 3 independent channels (edge selection, interrupt vector, and interrupt source flag)

Rising edge/falling edge/both edge selectability

Used for wake-up from stop/sleep mode. (Edge detection is also permitted in stop mode.)

External interrupt 2

(Wake-up function)

8 channels (low-level interrupt only)

Remote-control

transmission

frequency

generation

The pulse width and cycle are software-programmable.

(Continued)

2

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