AT89S8253 Atmel Corporation, AT89S8253 Datasheet - Page 43

• 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

Figure 25-3. Flash/EEPROM Serial Downloading
3286P–MICRO–3/10
3-24 MHz
DATA OUTPUT
INSTRUCTION
CLOCK IN
INPUT
P1.6/MISO
P1.5/MOSI
P1.7/SCK
XTAL2
XTAL1
GND
Oscillator Bypass
Fuse (Fuse4) Off
AT89S8253
RST
V
CC
2.7V to 5.5V
V
IH
DATA OUTPUT
INSTRUCTION
CLOCK IN
INPUT
EXTERNAL
3-24 MHz
CLOCK
P1.5/MOSI
P1.6/MISO
P1.7/SCK
XTAL1
GND
Oscillator Bypass
Fuse (Fuse4) On
AT89S8253
AT89S8253
RST
V
CC
2.7V to 5.5V
V
IH
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