M27C801-100K1TR Просмотр технического описания (PDF) - STMicroelectronics
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M27C801-100K1TR Datasheet PDF : 16 Pages
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M27C801
Table 9. Programming Mode DC Characteristics (1)
(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 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
VCC + 0.5
VOL
Output Low Voltage
IOL = 2.1mA
0.4
VOH Output High Voltage TTL
IOH = –1mA
3.6
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 = 12.75V ± 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 (and after each erasure for UV
EPROM), all bits of the M27C801 are in the ’1’
state. Data is introduced by selectively program-
ming ’0’s into the desired bit locations. Although
only ’0’ will be programmed, both ’1’s and ’0’s can
be present in the data word. The only way to
change a ’0’ to a ’1’ is by die exposure to ultraviolet
light (UV EPROM). The M27C801 is in the pro-
gramming mode when VPP input is at 12.75V and
E is pulsed to VIL. The data to be programmed is
applied to 8 bits in parallel to the data output pins.
The levels required for the address and data in-
puts are TTL. VCC is specified to be 6.25V ±
0.25V.
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