at89lp2052-20xi ATMEL Corporation, at89lp2052-20xi Datasheet - Page 68
at89lp2052-20xi
Manufacturer Part Number
at89lp2052-20xi
Description
At89lp2052 8-bit Microcontroller With 2/4-kbyte Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89LP2052-20XI.pdf
(93 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT89LP2052-20XI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- Current page: 68 of 93
- Download datasheet (2Mb)
23.4.11
23.4.12
68
AT89LP2052/LP4052
Write Lock Bits
Read Lock Bits
Function:
Usage:
Figure 23-15. Write Lock Bits Sequence
Function:
Usage:
Figure 23-16. Read Lock Bits Sequence
Note:
• Program (lock) Lock Bits 1 and 2.
1. Bring CS (P3.2) low.
2. Drive P1 to AAh and pulse XTAL1 high.
3. Drive P1 to E4h and pulse XTAL1 high.
4. Drive P1 to 00h and pulse XTAL1 high.
5. Drive P1 to 00h and pulse XTAL1 high.
6. Drive data on P1 and pulse XTAL1 high.
7. Drive CS high.
8. Wait 4 ms, monitor P3.1, or poll data/status.
• Read status of Lock Bits 1 and 2.
1. Bring CS (P3.2) low.
2. Drive P1 to 0xAA and pulse XTAL1 high.
3. Drive P1 to 0x64 and pulse XTAL1 high.
4. Drive P1 to 0x00 and pulse XTAL1 high.
5. Drive P1 to 0x00 and bring XTAL1 high.
6. Tri-state P1.
7. Bring XTAL1 low.
8. Read data from P1.
9. Drive CS high.
RDY/BSY
XTAL1
XTAL1
CS
The waveforms on this page are not to scale.
P1
CS
P1
AAh
AAh
E4h
00h
64h
00h
00h
111111LL
00h
111111LL
3547H–MICRO–5/07
Related parts for at89lp2052-20xi
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: