MB89T635R データシートの表示（PDF） - Fujitsu

部品番号

コンポーネント説明

メーカー

MB89T635R

8-bit Proprietary Microcontroller

Fujitsu 

MB89630R Series

s DIFFERENCES AMONG PRODUCTS

1. Memory Size

Before evaluating using the piggyback product, verify its differences from the product that will actually be used.

Take particular care on the following points:

On the MB89P637/W637, the program area starts from address 8007H but on the MB89PV630 and MB89637R

starts from 8000H.

• On the MB89P637/W637, addresses 8000H to 8006H comprise the option setting area, option settings can be

read by reading these addresses. On the MB89PV630/MB89637R, addresses 8000H to 8006H could also be

used as a program ROM. However, do not use these addresses in order to maintain compatibility of the

MB89P637/W637.

• The stack area, etc., is set at the upper limit of the RAM.

• The external area is used.

2. Current Consumption

• In the case of the MB89PV630, add the current consumed by the EPROM which connected to the top socket.

• When operated at low speed, the product with an OTPROM (one-time PROM) or an EPROM will consume

more current than the product with a mask ROM. However, the current consumption in sleep/stop modes is

the same. (For more information, see sections “s Electrical Characteristics” and “s Example Characteristics.”)

3. Mask Options

Functions that can be selected as options and how to designate these options vary by the product.

Before using options check section “s Mask Options.”

Take particular care on the following points:

• A pull-up resistor cannot be set for P50 to P53 on the MB89P637 and MB89W637.

• Options are fixed on the MB89PV630, MB89T635R, and MB89T637R.

4. Differences between the MB89630 and MB89630R Series

• Memory access area

There are no difference between the access area of MB89635/MB89635R, and that of MB89637/MB89637R.

The access area of MB89636 is different from that of the MB89636R when using in external bus mode.

Address

0000H to 007FH

0080H to 037FH

0380H to 047FH

0480H to 7FFFH

8000H to 9FFFH

A000H to FFFFH

MB89636

I/O area

RAM area

External area

ROM area

Memory area

MB89636R

I/O area

RAM area

Access prohibited

External area

Access prohibited

ROM area

5

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