參數(shù)資料
型號(hào): AT89C51RC-24PU
廠商: Atmel
文件頁數(shù): 15/36頁
文件大小: 0K
描述: IC MCU 32K FLASH 24MHZ 40-DIP
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 10
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 24MHz
連通性: SPI,UART/USART
外圍設(shè)備: WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 32KB(32K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 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
配用: AT89STK-11-ND - KIT STARTER FOR AT89C51RX2
22
1920D–MICRO–6/08
AT89C51RC
Chip Erase Sequence: Before the AT89C51RC can be reprogrammed, a Chip Erase operation
needs to be performed. To erase the contents of the AT89C51RC, follow this sequence:
1.
Raise V
CC to 6.5V.
2.
Pulse ALE/PROG once (duration of 200 ns - 500 ns) and wait for 150 ms.
3.
Power V
CC down and up to 6.5V.
4.
Pulse ALE/PROG once (duration of 200 ns - 500 ns) and wait for 150 ms.
5.
Power V
CC down and up.
Data Polling: The AT89C51RC features Data Polling to indicate the end of a write cycle. During
a write cycle, an attempted read of the last byte written will result in the complement of the writ-
ten data on P0.7. Once the write cycle has been completed, true data is valid on all outputs, and
the next cycle may begin. Data Polling may begin any time after a write cycle has been initiated.
Ready/Busy: The progress of byte programming can also be monitored by the RDY/BSY output
signal. P3.0 is pulled low after ALE goes high during programming to indicate BUSY. P3.0 is
pulled high again when programming is done to indicate READY.
Program Verify: If lock bits LB1 and LB2 have not been programmed, the programmed code
data can be read back via the address and data lines for verification. The status of the individual
lock bits can be verified directly by reading them back.
Reading the Signature Bytes: The signature bytes are read by the same procedure as a nor-
mal verification of locations 000H, 100H, and 200H, except that P3.6 and P3.7 must be pulled to
a logic low. The values returned are as follows:
(000H) = 1EH indicates manufactured by Atmel
(100H) = 51H
(200H) = 07H indicates 89C51RC
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