AT89S8253 Atmel Corporation, AT89S8253 Datasheet - Page 34

• Manufacturer Part Number: AT89S8253
• Manufacturer: Atmel Corporation

Specifications of AT89S8253

• Flash (kbytes): 12 Kbytes
• Max. Operating Frequency: 24 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.25
• Eeprom (bytes): 2048
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 3
• Isp: SPI
• Watchdog: Yes

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AT89S8253
Figure 16-3. Quartz Crystal Clock Source (B)
Figure 16-4. Ceramic Resonator Clock Source (A)
7
6
5
4
3
2
1
0
6
5
4
3
2
1
0
0
0
4
4
Ceramic Resonator Clock Input
Quartz Crystal Clock Input
8
8
Frequency (MHz)
Frequency (MHz)
12
12
16
16
20
20
C1=C2=0pF
C1=C2=5pF
C1=C2=10pF
C2=0pF
C2=5pF
C2=10pF
R1=4MΩ
24
24
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