參數(shù)資料
型號: UPD16664
廠商: NEC Corp.
英文描述: 144/160/184/208-OUTPUT LCD COLUMN SEGMENT DRIVER WITH RAM
中文描述: 144/160/184/208-OUTPUT液晶柱段驅(qū)動與RAM
文件頁數(shù): 25/52頁
文件大?。?/td> 347K
代理商: UPD16664
Data Sheet S13780EJ1V0DS00
25
μ
PD16664
12. CPU INTERFACE
12.1 Function of RDY(ready) Pin
The internal RAM is a single-port RAM. The CPU is kept waiting so that access from the CPU does not conflict with
reading by the driver.
(1) Timing
Hi-Z
Hi-Z
A
0
to A
16
,/UBE
/CS
/OE,/WE
RDY
Wait
Ready
Wait
(2) Connection of RDY pin
The RDY pin uses a three-state buffer. The RDY pin should be connected to an external pull-up resistor. If more
than one LSI are used, the RDY pins of each LSI are wired together.
RDY
RDY
CPU
V
CC2
Column driver
Column driver
Pull-up resistor
Ready input
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