參數(shù)資料
型號(hào): UPD16661AN-051
廠商: NEC Corp.
英文描述: 160-OUTPUT LCD COLUMN SEGMENT DRIVER WITH RAM
中文描述: 160輸出LCD列段驅(qū)動(dòng)與RAM
文件頁(yè)數(shù): 14/36頁(yè)
文件大?。?/td> 187K
代理商: UPD16661AN-051
14
μ
PD16661A
7. CPU INTERFACE
7.1 Function of the RDY (Ready) pin
The on-chip RAM uses a single-port RAM. In order to avoid conflict between accessing from the CPU side
and reading on the liquid-crystal drive side, the RDY pin performs a wait operation on the CPU.
(1) Timing
(2) Connection of the RDY pin
The RDY pin uses a 3-state buffer. Externally attach a pull-up resistor to the RDY pin.
When more than one
μ
PD16661A is used, wired-OR connect each LSI RDY pin.
Hi-z
Wait
Ready
Hi-z
A0 to A16,/UBE
/CS
/OE,/WE
RDY
Wait
CPU
RDY
Column driver
RDY
Ready input
Pull-up resistor
Column driver
V
CC2
#
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