參數(shù)資料
型號: M37641M8
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機
文件頁數(shù): 138/149頁
文件大?。?/td> 1997K
代理商: M37641M8
138
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
Limits
Typ.
Parameter
167
83.3
20.8
83.3
20.8
0
0
83.3
41.7
10
Symbol
Unit
Write cycle time
Address set up time
Address hold time
Data set up time
Data hold time
CE pulse width
H
CE pulse width
Program time
Erase all blocks time
RP recovery time
t
WC
t
AS
t
AH
t
DS
t
DH
t
CS
t
CH
t
WP
t
WPH
t
DAP
t
DAE
t
WHRL
t
PS
Min.
Max.
25
1.5
1000
20
167
ns
ns
ns
ns
ns
ns
ns
ns
ns
μ
s
s
ns
μ
s
Table 38 Read / Write mode (CE control)
Parameter
Erase all blocks time
Block erase time
Program time (1byte)
1.5
1.0
25
s
s
μ
s
Min.
Typ.
Max.
Unit
Table 39 Erase and program operation
Symbol
Min.
Typ.
Max.
Unit
Table 40 V
CC
power up / power down timing
Parameter
RP = V
IH
set up time
(after rised V
CC
= V
CC
min.)
t
VCS
10
Note :
The read timing parameter in the command write operation mode is the same as that of the read-only mode.
Typical value is at V
CC
= 5.0 V, Ta = 25
°
C condition.
Note :
Miserase or miswrite may happen, in case of noise pulse due to the power supply on or off is input to the control pins. Therefore disableing the
write mode is need for preventing memory data from breaking at the power supply on or off. 10
μ
s (min.) waiting time is need to initiate read or write
CC
rises to V
CC
min. at power supply on. The memory data is protected owing to keep the RP pin V
IL
level at power supply off. The
RP pin must be kept V
IL
level for 10
μ
s (min.) after V
CC
rises to V
CC
min. at the power supply on. The RP pin must be kept V
IL
level until the V
CC
falls to the GND level at power supply off. RP pin doesn
t have latch mode, so that RP pin must be kept V
IH
level during read, erase and program
operation.
μ
s
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