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AT89LP51RC2_14 Datasheet, PDF (218/254 Pages) ATMEL Corporation – 8-bit Microcontroller Compatible with 8051 Products
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Table 24-21. Programming Command Summary
Command
Opcode
Addr High
Addr Low
Data 0
Data n
Program Enable(1)
1010 1100
0101 0011
–
–
–
Parallel Enable(2)
1010 1100
0011 0101
–
–
–
Chip Erase
1000 1010
–
–
–
–
Read Status
Load Page Buffer(3)
0110 0000
0101 0001
xxxx xxxx
xxxx xxxx
xxxx xxxx
00bb bbbb
Status Out
Data In 0 ... Data In n
Write Code Page(3)
0101 0000
aaaa aaaa
asbb bbbb
Data In 0 ... Data In n
Write Code Page with Auto-Erase(3)
Read Code Page(3)
0111 0000
0011 0000
aaaa aaaa
aaaa aaaa
asbb bbbb
asbb bbbb
Data In 0 ... Data In n
Data Out 0 ... Data Out n
Write Data Page(3)
1101 0000
000a aaaa
asbb bbbb
Data In 0 ... Data In n
Write Data Page with Auto-Erase(3)
Read Data Page(3)
1101 0010
1011 0000
000a aaaa
000a aaaa
asbb bbbb
asbb bbbb
Data In 0 ... Data In n
Data Out 0 ... Data Out n
Write User Fuses(3)(4)(5)
1110 0001
0000 0000
00bb bbbb
Data In 0 ... Data In n
Write User Fuses with Auto-Erase(3)(4)(5)
Read User Fuses(3)(4)(5)
1111 0001
0110 0001
0000 0000
0000 0000
00bb bbbb
00bb bbbb
Data In 0 ... Data In n
Data Out 0 ... Data Out n
Write Lock Bits(3)(4)(6)
Read Lock Bits(3)(4)(6)
1110 0100
0110 0100
0000 0000
0000 0000
00bb bbbb
00bb bbbb
Data In 0 ... Data In n
Data Out 0 ... Data Out n
Write User Signature Page(3)
0101 0010
0000 0000
asbb bbbb
Data In 0 ... Data In n
Write User Signature Page with Auto-Erase(3)
Read User Signature Page(3)
0111 0010
0011 0010
0000 0000
0000 0000
asbb bbbb
asbb bbbb
Data In 0 ... Data In n
Data Out 0 ... Data Out n
Read Atmel Signature Page(3)
0011 1000
0000 0000
0sbb bbbb
Data Out 0 ... Data Out n
Notes: 1. Program Enable must be the first command issued after entering into programming mode.
2. Parallel Enable switches the interface from serial to parallel format until RST returns high.
3. Any number of Data bytes from 1 to 64 may be written/read. The internal address is incremented between each byte.
4. Each byte address selects one fuse or lock bit. Data bytes must be 00h or FFh.
5. See Table 24-5 on page 188 for Fuse definitions.
6. See Table 24-6 on page 190 for Lock Bit definitions.
7. Symbol Key:
a: Page Address Bit
s: Half Page Select Bit
b: Byte Address Bit
x: Don’t Care Bit
218 AT89LP51RB2/RC2/IC2 Preliminary
3722A–MICRO–10/11
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