参数资料
型号: MB89T635P-SH
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 10 MHz, MICROCONTROLLER, PDIP64
封装: SHRINK, DIP-64
文件页数: 33/153页
文件大小: 7326K
代理商: MB89T635P-SH
OPERATION
3-9
The BUFC signal is used when the address-data bus has an external buffer. It controls the buffer direction.
This signal can be used to facilitate buffer control.
Figure 3.6 shows an example of connecting the external peripheral/memory to the MB89630 series of
micro controllers. In this circuit, the external bus is used after enabling the operation of the HAK pin by the
external ROM. When using the hold function, the pull-up resistor must be attached externally to the HAK
pin.
At access to internal ROM, A15 to A08, AD7 to AD0, and ALE are output but WR and RD are not output.
Fig. 3.20 External Peripheral/Memory Connection
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