AT87C51RC2-3CSUM Atmel, AT87C51RC2-3CSUM Datasheet - Page 3

• Manufacturer Part Number: AT87C51RC2-3CSUM
• Description: IC 8051 MCU 32K OTP 40MHZ 40DIP
• Manufacturer: Atmel
• Series: 87Cr

Specifications of AT87C51RC2-3CSUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/20MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

3. Block Diagram
4188F–8051–01/08
ALE/
EA/VPP
XTAL1
XTAL2
PSEN
PROG
WR
RD
(3)
(3)
CPU
(3)
(3) (3)
EUART
Timer 0
Timer 1
(3)
CORE
C51
(3) (3)
256x8
RAM
Ctrl
INT
(2): Only available on high pin count packages
(3): Alternate function of Port 3
(1): Alternate function of Port 1
IB-bus
0/16/32/64Kx8
Port 0 Port 1 Port 2 Port 3
/EPROM
ROM
Parallel I/O Ports & Ext. Bus
256/768x8
XRAM
(1)
Port 4
PCA
(2)
(1)
Port 5
(1)
(2)
Timer2
(1)
Watch
Dog
AT/TS8xC51Rx2
3