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參數(shù)資料
| 型號(hào)： | uPSD3254B-24T1T |
| 廠(chǎng)商： | 意法半導(dǎo)體 |
| 英文描述： | Flash Programmable System Devices with 8032 Microcontroller Core |
| 中文描述： | 閃存可編程系統(tǒng)設(shè)備與8032微控制器內(nèi)核 |
| 文件頁(yè)數(shù)： | 114/175頁(yè) |
| 文件大小： | 1731K |
| 代理商： | UPSD3254B-24T1T |
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UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
114/175
– If a Reset Flash instruction is received, data in
the Flash memory sector that was being erased
is invalid.
Resume Sector Erase.
If a Suspend Sector
Erase instruction was previously executed, the
erase cycle may be resumed with this instruction.
The Resume Sector Erase instruction consists of
writing 030h to any address while an appropriate
Sector Select (FS0-FS7 or CSBOOT0-CSBOOT3)
is High. (See Table 85.)
Specific Features
Flash Memory Sector Protect.
Each
and secondary Flash memory sector can be sepa-
rately protected against Program and Erase cy-
cles. Sector Protection provides additional data
security because it disables all Program or Erase
cycles. This mode can be activated through the
JTAG Port or a Device Programmer.
primary
Sector protection can be selected for each sector
using the PSDsoft Express Configuration pro-
gram. This automatically protects selected sectors
when the device is programmed through the JTAG
Port or a Device Programmer. Flash memory sec-
tors can be unprotected to allow updating of their
contents using the JTAG Port or a Device Pro-
grammer. The MCU can read (but cannot change)
the sector protection bits.
Any attempt to program or erase a protected Flash
memory sector is ignored by the device. The Verify
operation results in a READ of the protected data.
This allows a guarantee of the retention of the Pro-
tection status.
The sector protection status can be read by the
MCU through the Flash memory protection regis-
ters (in the CSIOP block). See Table 87 and Table
1.
Table 87. Sector Protection/Security Bit Definition – Flash Protection Register
Note:
Bit Definitions:
Sec<i>_Prot
1 = Primary Flash memory or secondary Flash memory Sector <i> is write-protected.
Sec<i>_Prot
0 = Primary Flash memory or secondary Flash memory Sector <i> is not write-protected.
Note: 1. Sector Protection/Security Bit Definition – Secondary Flash Protection Register
Note:
Bit Definitions:
Sec<i>_Prot
1 = Secondary Flash memory Sector <i> is write-protected.
Sec<i>_Prot
0 = Secondary Flash memory Sector <i> is not write-protected.
Security_Bit
0 = Security Bit in device has not been set; 1 = Security Bit in device has been set.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Sec7_Prot
Sec6_Prot
Sec5_Prot
Sec4_Prot
Sec3_Prot
Sec2_Prot
Sec1_Prot
Sec0_Prot
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Security_Bit
not used
not used
not used
Sec3_Prot
Sec2_Prot
Sec1_Prot
Sec0_Prot
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| uPSD3254B-40T6T | Flash Programmable System Devices with 8032 Microcontroller Core |
| uPSD3254B-40U1T | Flash Programmable System Devices with 8032 Microcontroller Core |
| uPSD3254B-40U6T | Flash Programmable System Devices with 8032 Microcontroller Core |
| UPSD3254BV | Flash Programmable System Devices with 8032 Microcontroller Core |
| UPSD3254A | Flash Programmable System Devices with 8032 Microcontroller Core |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPSD3254B-24T6 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM |
| UPSD3254B-24T6T | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM |
| UPSD3254B-24U1 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM |
| UPSD3254B-24U1T | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core |
| UPSD3254B-24U6 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM |
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