參數(shù)資料
型號(hào): M38K27M4L-XXXFP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP64
封裝: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, LQFP-64
文件頁數(shù): 120/151頁
文件大?。?/td> 1403K
代理商: M38K27M4L-XXXFP
38K2 Group
Rev.3.00
Oct 15, 2006
page 70 of 147
REJ03B0193-0300
EXB Pin Assignment
The external bus interface (EXB) pins are shown bellow.
The 38K2 group can transmit/receive a data to/from an external
MCU, using the following signals:
Control input signal ................ 4 (ExCS, ExA0, ExRD, ExWR)
Data input/output pin .............. 8 (DQ0 to DQ7)
Interrupt output signal ............ 1 (ExINT)
Additionally, the DMA interface signal and the buffer status read
select signal of 38K2 group can be set up per one by the program.
Control input signal ................ 3 (ExTC, ExDACK, ExRD, ExA1)
Interrupt output signal ............ 1 (ExDREQ)
External chip select
External address
External read
External write
External data
External interrupt
DMA request
Terminal count
DMA acknowledge
Status read select
External pins
CPU
Multichannel RAM
External bus interface
(EXB)
38K2 group
P34/ExCS [ L ]
P37/ExA0 [address]
P36/ExRD [ L ]
P35/ExWR [ L ]
P10/DQ0/AN0—P17/DQ7/AN7 [data]
P33/ExINT [ L ]
P40/ExDREQ/RxD [ L ]
P42/ExTC/SCLK [L]
P41/ExDACK/TxD [ L ]
P43/ExA1/SRDY [H]
8
: Functions as normal ports
just after reset.
Fig. 105 External bus interface (EXB) pin assignment
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