AT89LP4052-16PI Atmel, AT89LP4052-16PI Datasheet - Page 71

• Manufacturer Part Number: AT89LP4052-16PI
• Description: IC 8051 MCU FLASH 4K 20DIP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP4052-16PI

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: AT89LP4052-20PI; AT89LP4052-20PI

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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