參數(shù)資料
型號(hào): AT89S2051-24PU
廠商: ATMEL CORP
元件分類(lèi): 微控制器/微處理器
英文描述: 8-bit Microcontroller with 2K/4K Bytes Flash
中文描述: 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PDIP20
封裝: 0.300 INCH, GREEN, MS-001AD, PLASTIC, DIP-20
文件頁(yè)數(shù): 27/46頁(yè)
文件大?。?/td> 1106K
代理商: AT89S2051-24PU
33
3390E–MICRO–6/08
AT89S2051/S4051
Notes:
1. Program Enable must be the first command issued after entering into the serial programming mode.
2. All 32 Data bytes must be written/read.
3. Fuse Bit Definitions:
*The ISP Enable Fuse must be enabled before entering ISP mode.
When disabling the ISP fuse during ISP mode, the current fuse state will remain active until RST is brought low.
**Any change will only take effect after the next power-down/power-up cycle event.
4. Lock Bit Definitions:
5. Atmel Signature Bytes:
34. Serial Programming Command Summary
Command
Byte 1
Byte 2
Byte 3
Byte 4
Byte ...
Program Enable(1)
1010 1100
0101 0011
xxxx xxxx
Chip Erase
1010 1100
100x xxxx
xxxx xxxx
Write Code Byte
0100 0000
xxxx
Read Code Byte
0010 0000
xxxx
Write Code Page(2)
0101 0000
xxxx
0 0000
Data 0 ... Data 31
Read Code Page(2)
0011 0000
xxxx
0 0000
Data 0 ... Data 31
Write User Fuses(3)
1010 1100
0001
xxxx xxxx
Read User Fuses(3)
0010 0001
xxxx xxxx
xxxx
Write Lock Bits(4)
1010 1100
1110 0x
xxxx xxxx
Read Lock Bits(4)
0010 0100
xxxx xxxx
xxxx xx
Write User Signature Byte
0100 0010
xxxx xxxx
xxx
Read User Signature Byte
0010 0010
xxxx xxxx
xxx
Write User Signature Page(2)
0101 0010
xxxx xxxx
Data 0 ... Data 31
Read User Signature Page(2)
0011 0010
xxxx xxxx
Data 0 ... Data 31
Read Atmel Signature Byte(5)
0010 1000
xxxx xxxx
xxx
Bit 0
Bit 1
Bit 2
Bit 3
ISP Enable*
x2 Clock
User Row Programming
XTAL Osc Bypass**
Enable = 0/Disable = 1
Bit 0
Bit 1
Lock Bit 1
Lock Bit 2
Locked = 0/Unlocked = 1
AT89S2051:
Address
00H = 1EH
01H = 23H
02H = FFH
AT89S4051:
Address
00H = 1EH
01H = 43H
02H = FFH
A11 A10 A9 A8
A7 A6 A5 A4
A3 A2 A1 A0
A7 A6 A5 A4
A3 A2 A1 A0
A7 A6 A5
D7 D6 D5 D4
D3 D2 D1 D0
D7 D6 D5 D4
D3 D2 D1 D0
D7 D6 D5 D4
D3 D2 D1 D0
D7 D6 D5 D4
D3 D2 D1 D0
LB2 LB1
D7 D6 D5 D4
D3 D2 D1 D0
A4
A3 A2 A1 A0
A4
A3 A2 A1 A0
A4
A3 A2 A1 A0
F3 F2 F1 F0
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