M27C801-90B6 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M27C801-90B6' PDF : 24 Pages View PDF
DC and AC characteristics
M27C801
Table 11. Programming mode AC characteristics (1)
Symbol
Alt
Parameter
Test condition Min.
tAVEL
tAS Address valid to Chip Enable low
2
tQVEL
tDS Input valid to Chip Enable low
2
tVCHEL
tVCS VCC high to Chip Enable low
2
tVPHEL
tOES VPP high to Chip Enable low
2
tVPLVPH
tPRT VPP rise time
50
tELEH
tPW Chip Enable program pulse width (initial)
45
tEHQX
tDH Chip Enable high to Input transition
2
tEHVPX
tOEH Chip Enable high to VPP transition
2
tVPLEL
tVR VPP low to Chip Enable low
2
tELQV
tDV Chip Enable low to output valid
tEHQZ (2)
tDFP Chip Enable high to output Hi-Z
0
tEHAX
tAH Chip Enable high to address transition
0
1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
2. Sampled only, not 100% tested.
Figure 9. Programming and verify modes AC waveforms
Max.
55
1
130
A0-A19
Q0-Q7
VCC
GVPP
E
tAVEL
DATA IN
tQVEL
VALID
tEHQX
DATA OUT
tEHAX
tEHQZ
tVCHEL
tEHVPX
tELQV
tVPHEL
tVPLEL
tELEH
Unit
µs
µs
µs
µs
ns
µs
µs
µs
µs
µs
ns
ns
PROGRAM
VERIFY
AI01270
18/24
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