AT89LP2052 datasheet(55/90 Pages) ATMEL

55 / 90 page

3547F–MICRO–6/06

AT89LP2052/LP4052

Notes:

1. Program Enable must be the first command issued after entering into programming mode.

2. Any number of Data bytes from 1 to 32 may be written/read. The internal address is incremented between each byte.

3. Fuse Bit Definitions:

*The AT89LP2052/LP4052 has ISP enabled by default from the factory. However, if ISP is later disabled, the ISP Enable

Fuse must be enabled by using Parallel Programming before entering ISP mode.

When disabling the ISP fuse during ISP, the current ISP session will remain active until RST is brought low.

4. Lock Bit Definitions:

5. Atmel Signature Byte:

6. Symbol Key:

22.1

Programming Command Summary

Command

Preamble

Opcode

Addr High

Addr Low

Data 0

Data n

Program Enable(1)

1010 1010

1010 1100

0101 0011

Chip Erase

1010 1010

1000 1010

Read Status

1010 1010

0110 0000

xxxx xxxx

xxxx

Status Out

Load Code Page Buffer(2)

1010 1010

0101 0001

xxxx xxxx

xxx

DataIn 0 ... DataIn n

Write Code Page(2)

1010 1010

0101 0000

xxxx

DataIn 0 ... DataIn n

Read Code Page(2)

1010 1010

0011 0000

xxxx

DataOut 0 ... DataOut n

Write User Fuses(3)

1010 1010

1110 0001

xxxx xxxx

xxxx

Read User Fuses(3)

1010 1010

0110 0001

xxxx xxxx

xxxx

Write Lock Bits(4)

1010 1010

1110 0100

xxxx xxxx

xxxx xx

Read Lock Bits(4)

1010 1010

0110 0100

xxxx xxxx

xxxx xx

Write User Signature Page(2)

1010 1010

0101 0010

xxxx xxxx

xxx

DataIn 0 ... DataIn n

Read User Signature Page(2)

1010 1010

0011 0010

xxxx xxxx

xxx

DataOut 0 ... DataOut n

Read Atmel Signature Page(2)(5)

1010 1010

0011 1000

xxxx xxxx

xxx

DataOut 0 ... DataOut n

Bit 0

Bit 1

Bit 2

Bit 3

ISP Enable*

XTAL Osc Bypass

User Row Programming

System Clock Out

Enable = 0/Disable = 1

Bit 0

Bit 1

Lock Bit 1

Lock Bit 2

Locked = 0/Unlocked = 1

AT89LP2052:

Address 00H = 1EH

01H = 25H

02H = FFH

AT89LP4052:

Address 00H = 1EH

01H = 45H

02H = FFH

Page Address Bit

Byte Address Bit

Fuse Bit Data

Lock Bit Data

Don’t Care

AT89LP2052 Datasheet(PDF) 55 Page - ATMEL Corporation

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