參數(shù)資料
型號: AT89C52-24PI
廠商: Atmel
文件頁數(shù): 6/24頁
文件大小: 0K
描述: IC MICRO CTRL 24MHZ 40DIP
標準包裝: 9
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 24MHz
連通性: SIO,UART/USART
輸入/輸出數(shù): 32
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
AT89C52
14
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.
Note:
1. Chip Erase requires a 10 ms PROG pulse.
Flash Programming Modes
Mode
RST
PSEN
ALE/PROG
EA/V
PP
P2.6
P2.7
P3.6
P3.7
Write Code Data
H
L
H/12V
L
H
Read Code Data
H
L
H
L
H
Write Lock
Bit - 1
H
L
H/12V
H
Bit - 2
H
L
H/12V
H
L
Bit - 3
H
L
H/12V
H
L
H
L
Chip Erase
H
L
H/12V
H
L
Read Signature Byte
H
L
H
L
(1)
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AT89C52-24PU 制造商:Atmel Corporation 功能描述:8051 MCU W/ 8K FLASH - 24MHZ PDIP IND TE
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