AT89LP428-20MU ATMEL [ATMEL Corporation], AT89LP428-20MU Datasheet - Page 119

• Manufacturer Part Number: AT89LP428-20MU
• Description: 8-bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Table 23-3.
Notes:
3654A–MICRO–8/09
Command
Program Enable
Chip Erase
Read Status
Load Page Buffer
Write Code Page
Write Code Page with Auto-Erase
Read Code Page
Write Data Page
Write Data Page with Auto-Erase
Read Data Page
Write User Fuses
Write User Fuses with Auto-Erase
Read User Fuses
Write Lock Bits
Read Lock Bits
Write User Signature Page
Write User Signature Page with Auto-Erase
Read User Signature Page
Read Atmel Signature Page
1. Program Enable must be the first command issued after entering into programming mode.
2. Any number of Data bytes from 1 to 64 may be written/read. The internal address is incremented between each byte.
3. Each byte address selects one fuse or lock bit. Data bytes must be 00H or FFH.
4. See
5. See
6. Atmel Signature Bytes:
7. Symbol Key:
Programming Command Summary
(2)(3)(5)
(2)(3)(5)
AT89LP428:
AT89LP828:
Table 23-6 on page 121
Table 23-5 on page 120
(1)
(2)
(2)
(2)
(2)
(2)
(2)(3)(4)
(2)(3)(4)
Address:
a:
b:
x:
(2)
(2)
(2)(6)
Page Address Bit
Byte Address Bit
Don’t Care Bit
0000H
1EH
1EH
(2)
(2)
(2)(3)(4)
for Fuse definitions.
for Lock Bit definitions.
(2)
0001H
40H
42H
1010 1100
1000 1010
0110 0000
0101 0001
0101 0000
0111 0000
0011 0000
1101 0000
1101 0010
1011 0000
1110 0001
1111 0001
0110 0001
1110 0100
0110 0100
0101 0010
0111 0010
0011 0010
0011 1000
Opcode
0002H
FFH
FFH
Addr High
0101 0011
000a aaaa
000a aaaa
000a aaaa
0000 0aaa
0000 0aaa
0000 0aaa
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
xxxx xxxx
xxxx xxxx
–
00bb bbbb
aabb bbbb
aabb bbbb
aabb bbbb
aabb bbbb
aabb bbbb
aabb bbbb
00bb bbbb
00bb bbbb
00bb bbbb
00bb bbbb
00bb bbbb
0abb bbbb
0abb bbbb
0abb bbbb
00bb bbbb
Addr Low
xxxx xxxx
–
–
AT89LP428/828
DataOut 0 ... DataOut n
DataOut 0 ... DataOut n
DataOut 0 ... DataOut n
DataOut 0 ... DataOut n
DataOut 0 ... DataOut n
DataOut 0 ... DataOut n
Data 0
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
DataIn 0 ... DataIn n
–
–
Status Out
Data n
–
–
119