參數(shù)資料
型號(hào): UPD46128512F9-CR2
廠商: NEC Corp.
英文描述: 128M-BIT CMOS MOBILE SPECIFIED RAM 8M-WORD BY 16-BIT EXTENDED TEMPERATURE OPERATION
中文描述: 128兆位CMOS移動(dòng)指明內(nèi)存800萬字由16位溫度范圍
文件頁數(shù): 44/82頁
文件大小: 817K
代理商: UPD46128512F9-CR2
Preliminary Data Sheet M17507EJ2V0DS
44
μ
PD46128512-X
Figure 7-12. Asynchronous Write Cycle Timing Chart 2 (Basic Timing2)
/CE1 (Input)
Address (Input)
DQ (Input)
High-Z
High-Z
t
WC
t
WC
/WE (Input)
t
CW
t
WR
/LB, /UB (Input)
/ADV (Input)
t
ASC
/OE (Input)
t
OES
t
WR
t
BW
t
AS
t
DW
t
DH
t
ASV
t
AH
t
VPL
t
VPL
t
AS
t
AS
t
WR
t
WP
t
AS
t
AS
Data In D1
A1
A2
Cautions 1. During address transition, at least one of pins /CE1 and /WE, or both of /LB and /UB pins should
be inactivated.
2. Do not input data to the DQ pins while they are in the output state.
3. In write cycle, CE2 and /OE should be fixed HIGH.
4. CLK should be fixed HIGH or LOW.
Remark
Write operation is done during the overlap time of LOW of following signals.
/CE1
/WE
/LB and/or /UB
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