AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 83

• Manufacturer Part Number: AT89C51RE2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RE2

• Flash (kbytes): 128 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Spi: 1
• Uart: 2
• Sram (kbytes): 8.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART/OCD
• Watchdog: Yes

Figure 30. PCA Timer/Counter
7663E–8051–10/08
Fclk periph / 2
Fclk periph /6
Idle
T0 OVF
P1.2
CIDL
CF
WDTE
CR
CCF4 CCF3 CCF2 CCF1 CCF0
CPS1 CPS0
16 bit up/down counter
CH
ECF
CL
CMOD
0xD9
CCON
0xD8
overflow
To PCA
modules
AT89C51RE2
It
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