AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 16

• Manufacturer Part Number: AT89C51AC3
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC3

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Figure 5. Clock CPU Generation Diagram
16
XTAL1
XTAL2
AT89C51AC3
PCON.1
CKCON.0
PD
X2
÷
2
Hardware byte
CKCON1.0
SPIX2
CKCON.0
X2B
÷
1
0
X2
2
CKCON0.6
WDX2
÷
On RESET
÷
1
0
2
2
CKCON0.5
PCAX2
÷
1
0
0
1
2
PCON.0
IDL
CKCON0.4
SIX2
÷
1
0
2
CKCON0.3
T2X2
÷
1
0
2
CKCON0.2
T1X2
÷
1
0
2
CPU Core Clock Symbol
CKCON0.1
T0X2
1
0
CLOCK
and ADC
CPU
CPU Core
Clock
Clock Symbol
Peripheral
PERIPH
CLOCK
FT1 Clock
FPca Clock
FUart Clock
FSPIClock
FT0 Clock
FT2 Clock
4383D–8051–02/08
FWd Clock