M27V320 データシートの表示（PDF） - STMicroelectronics
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M27V320 Datasheet PDF : 15 Pages
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M27V320
Table 9. Programming Mode DC Characteristics (1)
(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12V ± 0.25V)
Symbol
Parameter
Test Condition
Min
Max
ILI
Input Leakage Current
VIL ≤ VIN ≤ VIH
±10
ICC
Supply Current
50
IPP
Program Current
E = VIL
50
VIL
Input Low Voltage
–0.3
0.8
VIH
Input High Voltage
2.4
VCC + 0.5
VOL Output Low Voltage
IOL = 2.1mA
0.4
VOH Output High Voltage TTL
IOH = –2.5mA
3.5
VID
A9 Voltage
11.5
12.5
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Unit
µA
mA
mA
V
V
V
V
V
Table 10. MARGIN MODE AC Characteristics (1)
(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12V ± 0.25V)
Symbol
Alt
Parameter
Test Condition Min
tA9HVPH
tAS9 VA9 High to VPP High
2
tVPHEL
tVPS VPP High to Chip Enable Low
2
tA10HEH
tAS10 VA10 High to Chip Enable High (Set)
1
tA10LEH
tAS10 VA10 Low to Chip Enable High (Reset)
1
tEXA10X
tAH10 Chip Enable Transition to VA10 Transition
1
tEXVPX
tVPH Chip Enable Transition to VPP Transition
2
tVPXA9X
tAH9 VPP Transition to VA9 Transition
2
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Max
Unit
µs
µs
µs
µs
µs
µs
µs
Programming
When delivered, all bits of the M27V320 are in the
'1' state. Data is introduced by selectively pro-
gramming '0's into the desired bit locations. Al-
though only '0's will be programmed, both '1's and
'0's can be present in the data word. The M27V320
is in the programming mode when VPP input is at
12.5V, GVPP is at VIH and E is pulsed to VIL. The
data to be programmed is applied to 16 bits in par-
allel to the data output pins. The levels required for
the address and data inputs are TTL. VCC is spec-
ified to be 6.25V ± 0.25V.
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