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參數(shù)資料
| 型號(hào)： | UPSD3253B-40T6 |
| 廠商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | PLASTIC, TQFP-52 |
| 文件頁(yè)數(shù)： | 23/189頁(yè) |
| 文件大?。?/td> | 1638K |
| 代理商： | UPSD3253B-40T6 |
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Obsolete
Product(s)
- Obsolete
Product(s)
UPSD3254A, UPSD3254BV, UPSD3253B, UPSD3253BV
Memory blocks
119/189
It is suggested (as with all Flash memories) to read the location again after the embedded
programming algorithm has completed, to compare the byte that was written to Flash
memory with the byte that was intended to be written.
When using the Data Toggle method after an Erase cycle, Figure 52 still applies. the Toggle
Flag bit (DQ6) toggles until the Erase cycle is complete. A 1 on the Error Flag bit (DQ5)
indicates a time-out condition on the Erase cycle; a '0' indicates no error. The MCU can read
any location within the sector being erased to get the Toggle Flag bit (DQ6) and the Error
Flag bit (DQ5).
PSDsoft Express generates ANSI C code functions which implement these Data Toggling
algorithms.
Figure 52.
Data toggle flowchart
22.6.3
Unlock Bypass
The Unlock Bypass instructions allow the system to program bytes to the Flash memories
faster than using the standard Program instruction. The Unlock Bypass mode is entered by
first initiating two Unlock cycles. This is followed by a third WRITE cycle containing the
Unlock Bypass code, 20h (as shown in Table 85).
The Flash memory then enters the Unlock Bypass mode. A two-cycle Unlock Bypass
Program instruction is all that is required to program in this mode. The first cycle in this
instruction contains the Unlock Bypass Program code, A0h. The second cycle contains the
program address and data. Additional data is programmed in the same manner. These
instructions dispense with the initial two Unlock cycles required in the standard Program
instruction, resulting in faster total Flash memory programming.
During the Unlock Bypass mode, only the Unlock Bypass Program and Unlock Bypass
Reset Flash instructions are valid.
READ
DQ5 & DQ6
START
READ DQ6
FAIL
PASS
AI01370B
DQ6
=
TOGGLE
NO
YES
DQ5
= 1
NO
YES
DQ6
=
TOGGLE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPSD3334D-40U6 | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP80 |
| US1001FL | 0.5 A, 100 V, SILICON, SIGNAL DIODE |
| US1A-HE3 | 1 A, 50 V, SILICON, SIGNAL DIODE, DO-214AC |
| US1B-HE3 | 1 A, 100 V, SILICON, SIGNAL DIODE, DO-214AC |
| US1G-HE3 | 1 A, 400 V, SILICON, SIGNAL DIODE, DO-214AC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPSD3253B-40T6T | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3253B-40U1 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3253B-40U1T | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3253B-40U6 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
| UPSD3253B-40U6T | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Flash Programmable System Device with 8032 Microcontroller Core |
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