AT89S8253 Atmel Corporation, AT89S8253 Datasheet - Page 50

• 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

34. External Data Memory Write Cycle
35. External Clock Drive Waveforms
36. External Clock Drive
50
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
CLCL
AT89S8253
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
41.6
Min
12
12
0
V
CC
= 2.7V to 5.5V
Max
24
5
5
3286P–MICRO–3/10
Units
MHz
ns
ns
ns
ns
ns