參數(shù)資料
型號: MB89635RP-SH
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP64
封裝: SHRINK, DIP-64
文件頁數(shù): 32/153頁
文件大小: 7326K
代理商: MB89635RP-SH
MB89630 SERIES HARDWARE MANUAL
3-8
3.4 MEMORY ACCESS MODE
When external access is enabled by setting bits 2 to 0 of the mode data at address FFFD
H,
the
areas in Figure 3.4 are externally accessed via the P0 to P2 pins.
Fig. 3.18 Memory Map in Various Modes
As shown in Figure 3.5, when accessing by the external pins, specify the address of the external peripheral/
memory to be accessed according to the access information to be output to the address and address-data
pins. The lower 8 bits of the address are input and output by time-sharing with the data bus. Therefore, the
external circuit should be created so that the address information can be latched at the falling edge of the
ALE signal to be output to the ALE pin. For access, when reading, input data from the external peripheral/
memory to the data pin in synchronization with the read strobes to be output to the RD pin; when writing,
write the data to be output to the data pin to the external peripheral/memory in synchronization with the
write strobes to be output to the WR pin.
Fig. 3.19 External-access Timing Chart
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MB89636PF 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89636PFM 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89636P-SH 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller
MB89636R 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-bit Proprietary Microcontroller