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参数资料
| 型号： | AT89C52-12PI |
| 厂商： | ATMEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-Bit Microcontroller with 8K Bytes Flash |
| 中文描述： | 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PDIP40 |
| 封装： | 0.600 INCH, PLASTIC, DIP-40 |
| 文件页数： | 13/22页 |
| 文件大小： | 181K |
| 代理商： | AT89C52-12PI |
AT89C52
4-73
Chip Erase:
The entire Flash array is erased electrically
by using the proper combination of control signals and by
holding ALE/PROG low for 10 ms. The code array is written
with all 1s. The chip erase operation must be executed
before the code memory can be reprogrammed.
Reading the Signature Bytes:
The signature bytes are
read by the same procedure as a normal verification of
locations 030H, 031H, and 032H, except that P3.6 and
P3.7 must be pulled to a logic low. The values returned are
as follows.
(030H) = 1EH indicates manufactured by Atmel
(031H) = 52H indicates 89C52
(032H) = FFH indicates 12V programming
(032H) = 05H indicates 5V programming
Programming Interface
Every code byte in the Flash array can be written, and the
entire array can be erased, by using the appropriate combi-
nation of control signals. The write operation cycle is self-
timed and once initiated, will automatically time itself to
completion.
All major programming vendors offer worldwide support for
the Atmel microcontroller series. Please contact your local
programming vendor for the appropriate software revision.
Flash Programming Modes
Note:
1. Chip Erase requires a 10-ms PROG pulse.
Mode
RST
PSEN
ALE/PROG
EA/V
PP
H/12V
P2.6
P2.7
P3.6
P3.7
Write Code Data
H
L
L
H
H
H
Read Code Data
H
L
H
H
L
L
H
H
Write Lock
Bit - 1
H
L
H/12V
H
H
H
H
Bit - 2
H
L
H/12V
H
H
L
L
Bit - 3
H
L
H/12V
H
L
H
L
Chip Erase
H
L
H/12V
H
L
L
L
Read Signature Byte
H
L
H
H
L
L
L
L
(1)
相关PDF资料 |
PDF描述 |
|---|---|
| AT89C52 | Hex Inverter 14-SO -40 to 125 |
| AT89C52-12QC | Hex Inverter 14-SO -40 to 85 |
| AT89C52-12QI | Hex Inverter 14-TSSOP -40 to 125 |
| AT89C52-16AA | Hex Inverter 14-TSSOP -40 to 125 |
| AT89C52-16AC | Hex Inverter 14-TSSOP -40 to 125 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT89C52-12QA | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 8K Bytes Flash |
| AT89C52-12QC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 8K Bytes Flash |
| AT89C52-12QI | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 8K Bytes Flash |
| AT89C52-16AA | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 8K Bytes Flash |
| AT89C52-16AC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 8K Bytes Flash |
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