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参数资料
| 型号： | M27W256-100K6TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | PROM |
| 英文描述： | 32K X 8 OTPROM, 100 ns, PQCC32 |
| 封装： | PLASTIC, LCC-32 |
| 文件页数： | 2/23页 |
| 文件大小： | 236K |
| 代理商： | M27W256-100K6TR |
Obsolete
Product(s)
- Obsolete
Product(s)
Device description
M27W256
Figure 5.
Programming flowchart
2.7
Program Inhibit
Programming of multiple M27W256s in parallel with different data is also easily
accomplished. Except for E, all like inputs including G of the parallel M27W256 may be
common. A TTL low level pulse applied to a M27W256's E input, with VPP at 12.75 V, will
program that M27W256. A high level E input inhibits the other M27W256s from being
programmed.
2.8
Program Verify
A verify (read) should be performed on the programmed bits to determine that they were
correctly programmed. The verify is accomplished with G at VIL, E at VIH, VPP at 12.75V and
VCC at 6.25V.
2.9
Electronic Signature
The Electronic Signature (ES) mode allows the reading out of a binary code from an
EPROM that will identify its manufacturer and type. This mode is intended for use by
programming equipment to automatically match the device to be programmed with its
corresponding programming algorithm. The ES mode is functional in the 25°C ± 5°C
ambient temperature range that is required when programming the M27W256. To activate
the ES mode, the programming equipment must force 11.5V to 12.5V on address line A9 of
the M27W256, with VCC = VPP = 5V. Two identifier bytes may then be sequenced from the
device outputs by toggling address line A0 from VIL to VIH. All other address lines must be
held at VIL during Electronic Signature mode. Byte 0 (A0 = VIL) represents the manufacturer
code and byte 1 (A0 = VIH) the device identifier code. For the STMicroelectronics M27W256,
AI00707D
n = 0
Last
Addr
VERIFY
P = 100
s Pulse
++n
= 25
++ Addr
VCC = 6.25V, VPP = 12.75V
FAIL
CHECK ALL WORDS
1st: VCC = 5V
2nd: VCC = 2.7V
YES
NO
YES
NO
YES
NO
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M27W256-100N6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kbit 32Kb x 8 Low Voltage UV EPROM and OTP EPROM |
| M27W256-120B6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kbit 32Kb x 8 Low Voltage UV EPROM and OTP EPROM |
| M27W256-120F6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kbit 32Kb x 8 Low Voltage UV EPROM and OTP EPROM |
| M27W256-120K6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kbit 32Kb x 8 Low Voltage UV EPROM and OTP EPROM |
| M27W256-120N6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:256 Kbit 32Kb x 8 Low Voltage UV EPROM and OTP EPROM |
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