M27C320 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
M27C320 Datasheet PDF : 15 Pages
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M27C320
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 M27C320 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
M27C320 is in the programming mode when VPP
input is at 12.5V, G is at VIH and E is pulsed to VIL.
The data to be programmed is applied to 16 bits in
parallel to the data output pins. The levels required
for the address and data inputs are TTL. VCC is
specified to be 6.25V ± 0.25V.
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