MB89990 데이터 시트보기 (PDF) - Fujitsu

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MB89990

8-bit Proprietary Microcontroller

Fujitsu 

MB89990 Series

s DIFFERENCES AMONG PRODUCTS

1. Memory Size

Before evaluating using the piggyback model, verify its difference from the model that will actually be used.

Take particular care on the following points:

• On the MB89997, addresses 0140H to 0180H cannot be used for register banks.

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

2. Current Consumption

• In the case of MB89PV190, add the current consumed by the EPROM which is connected to the top socket.

• When operated at low speed, a model with an OTPROM (EPROM) will consume more current than a model

with a mask ROM.

However, current consumption in the sleep/stop mode in the same. (For more information, see “s Electrical

Characteristics.”)

3. Mask Options

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

Before using options check “s Mask Options.”

Take particular care on the following points:

• The power-on reset option is fixed as “enabled” for MB89P195.

• Options are fixed on the MB89PV190.

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