AT89LP4052 Atmel Corporation, AT89LP4052 Datasheet - Page 13

• 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

3547J–MICRO–10/09
Figure 11-5. Ceramic Resonator Clock Source (B)
To drive the device from an external clock source, XTAL2 should be left unconnected while
XTAL1 is driven, as shown in
Figure 11-6. External Clock Drive Configuration
7
6
5
4
3
2
1
0
0
4
Ceramic Resonator Clock Input
Figure
8
11-6.
Frequency (MHz)
12
AT89LP2052/LP4052
16
20
C2=0pF
C2=5pF
C2=10pF
R1=4 MΩ
24
13