M27W201-200F6TR(2001) 查看數據表（PDF） - STMicroelectronics
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M27W201-200F6TR Datasheet PDF : 16 Pages
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M27W201
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
0 ≤ VIN ≤ VCC
±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 = –400µA
2.4
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. Programming Mode AC Characteristics (1)
(TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V)
Symbol
Alt
Parameter
Test Condition
Min
tAVPL
tAS Address Valid to Program Low
2
tQVPL
tDS Input Valid to Program Low
2
tVPHPL
tVPS VPP High to Program Low
2
tVCHPL
tVCS VCC High to Program Low
2
tELPL
tCES Chip Enable Low to Program Low
2
tPLPH
tPW Program Pulse Width
95
tPHQX
tDH Program High to Input Transition
2
tQXGL
tOES Input Transition to Output Enable Low
2
tGLQV
tOE Output Enable Low to Output Valid
tGHQZ (2)
tDFP Output Enable High to Output Hi-Z
0
tGHAX
tAH
Output Enable High to Address
Transition
0
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
2. Sampled only, not 100% tested.
Max Unit
µs
µs
µs
µs
µs
105
µs
µs
µs
100
ns
130
ns
ns
Programming
The M27W201 has been designed to be fully com-
patible with the M27C2001 and has the same elec-
tronic signature. As a result the M27W201 can be
programmed as the M27C2001 on the same pro-
gramming equipment applying 12.75V on VPP and
6.25V on VCC by the use of the same PRESTO II
algorithm.
When delivered (and after each ‘1’s erasure for UV
EPROM), all bits of the M27W201 are in the '1'
state.Data is introduced by selectively program-
ming '0's into the desired bit locations. Although
only '0's 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 M27W201 is in the pro-
gramming mode when VPP input is at 12.75V, E is
at VIL and P is pulsed to VIL. The data to be pro-
grammed is applied to 8 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.
7/16
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