7641 데이터 시트보기 (PDF) - Mitsumi
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7641 Datasheet PDF : 149 Pages
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MITSUBISHI MICROCOMPUTERS
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Flash Memory Electrical Characteristics (Timing)
AC Electrical Characteristics (Timing)
(Ta = 20 to 70 oC, VCC = 4.5 to 5.25 V, φ = 6 MHz unless otherwise noted)
Table 36 Read-only mode
Symbol
Parameter
tRC
ta (AD)
ta (CE)
ta (OE)
tCLZ
tDF(CE)
tOLZ
tDF(OE)
tPHZ
tOH
tOEH
tPS
Read cycle time
Address access time
_____
CE access time
_____
OE access time
_____
Output enable time (after CE)
_____
Output floating time (after CE)
_____
Output enable time (after OE)
_____
Output floating time (after OE)
_____
Output floating time (after PR)
_____ _____
Output valid time (after CE, OE, address)
Write recovery time (before read)
_____
RP recovery time
Note : Timing measurement condition is showed in Figure 118.
Limits
Min.
Typ.
167
0
0
0
167
10
Table 37 Read / Write mode (WE control)
Symbol
tWC
tAS
tAH
tDS
tDH
tCS
tCH
tWP
tWPH
tGHWL
tDAP
tDAE
tWHRL
tPS
Parameter
Write cycle time
Address set up time
Address hold time
Data set up time
Data hold time
_____
CE set up time
_____
CE hold time
_____
WE pulse width
“H” write pulse width
Read recover time (before write)
Program time
Erase all blocks time
_____
RY/BY delay time
_____
RP recovery time
Min.
167
83.3
20.8
83.3
20.8
0
0
83.3
41.7
167
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 VCC = 5.0 V, Ta = 25 °C condition.
Limits
Typ.
25
1.5
Max.
83.3
83.3
66.7
20.8
20.8
250
Max.
1000
20
167
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
s
ns
µs
137
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