AT89LP4052 Atmel Corporation, AT89LP4052 Datasheet - Page 71

• Manufacturer Part Number: AT89LP4052
• Manufacturer: Atmel Corporation

Specifications of AT89LP4052

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 15
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.25
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 2
• Isp: SPI
• Watchdog: Yes

23.4.15
3547J–MICRO–10/09
Read Status
Function:
Usage:
Figure 23-19. Read Status Sequence
Note:
• Read memory status byte.
1. Bring CS (P3.2) low.
2. Drive P1 to 0xAA and pulse XTAL1 high.
3. Drive P1 to 0x60 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.
XTAL1
The waveform on this page is not to scale.
CS
P1
AAh
60h
00h
AT89LP2052/LP4052
00h
1111SSSS
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