參數(shù)資料
型號: AT89C2051-24SJ
廠商: Atmel
文件頁數(shù): 19/19頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 2K FLASH 2.7V 20-PIN
標(biāo)準(zhǔn)包裝: 37
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 24MHz
連通性: UART/USART
外圍設(shè)備: LED
輸入/輸出數(shù): 15
程序存儲器容量: 2KB(2K x 8)
程序存儲器類型: 閃存
RAM 容量: 128 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: 20-SOIC(0.295",7.50mm 寬)
包裝: 管件
9
0368H–MICRO–6/08
AT89C2051
12. Programming Interface
Every code byte in the Flash array can be written and the entire array can be erased by using
the appropriate combination of control signals. The write operation cycle is self-timed and once
initiated, will automatically time itself to completion.
Most major worldwide programming vendors offer support for the Atmel AT89 microcontroller
series. Please contact your local programming vendor for the appropriate software revision.
Notes:
1. The internal PEROM address counter is reset to 000H on the rising edge of RST and is advanced by a positive pulse at
XTAL1 pin.
2. Chip Erase requires a 10 ms PROG pulse.
3. P3.1 is pulled Low during programming to indicate RDY/BSY.
13. Flash Programming Modes
Mode
RST/VPP
P3.2/PROG
P3.3
P3.4
P3.5
P3.7
Write Code Data(1)(3)
12V
L
H
Read Code Data(1)
HH
L
H
Write Lock
Bit - 1
12V
HH
Bit - 2
12V
H
L
Chip Erase
12V
H
L
Read Signature Byte
H
L
(2)
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