AT89C51RC2-SLSUL Atmel, AT89C51RC2-SLSUL Datasheet - Page 10

• Manufacturer Part Number: AT89C51RC2-SLSUL
• Description: IC 8051 MCU FLASH 32K 44PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RC2-SLSUL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1280 B
• Interface Type: UART, SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Package: 44PLCC
• Device Core: 80C51
• Family Name: AT89
• Maximum Speed: 40 MHz
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCUAT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Table 12. Pin Description for 40 - 44 Pin Packages
10
Mnemonic
V
V
P0.0 - P0.7
P1.0 - P1.7
SS
CC
AT89C51RB2/RC2
39 - 32
DIL
1 - 8
20
40
1
2
3
4
5
6
7
8
Pin Number
43 - 36
LCC
2 - 9
22
44
2
3
4
5
6
7
8
9
VQFP44 1.4
37 - 30
40 - 44
1 - 3
16
38
40
41
42
43
44
1
2
3
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
I
I
Name and Function
Ground: 0V reference
Power Supply: This is the power supply voltage for normal, idle and power-down
operation
Port 0: Port 0 is an open-drain, bi-directional I/O port. Port 0 pins that have 1s
written to them float and can be used as high impedance inputs. Port 0 must be
polarized to V
is also the multiplexed low-order address and data bus during access to external
program and data memory. In this application, it uses strong internal pull-up when
emitting 1s. Port 0 also inputs the code Bytes during Flash programming. External
pull-ups are required during program verification during which P0 outputs the code
Bytes.
Port 1: Port 1 is an 8-bit bi-directional I/O port with internal pull-ups. Port 1 pins that
have 1s written to them are pulled high by the internal pull-ups and can be used as
inputs. As inputs, Port 1 pins that are externally pulled low will source current
because of the internal pull-ups. Port 1 also receives the low-order address Byte
during memory programming and verification.
Alternate functions for AT89C51RB2/RC2 Port 1 include:
P1.0: Input/Output
T2 (P1.0): Timer/Counter 2 external count input/Clockout
P1.1: Input/Output
T2EX: Timer/Counter 2 Reload/Capture/Direction Control
SS: SPI Slave Select
P1.2: Input/Output
ECI: External Clock for the PCA
P1.3: Input/Output
CEX0: Capture/Compare External I/O for PCA Module 0
P1.4: Input/Output
CEX1: Capture/Compare External I/O for PCA Module 1
P1.5: Input/Output
CEX2: Capture/Compare External I/O for PCA Module 2
MISO: SPI Master Input Slave Output line
When SPI is in master mode, MISO receives data from the slave peripheral. When
SPI is in slave mode, MISO outputs data to the master controller.
P1.6: Input/Output
CEX3: Capture/Compare External I/O for PCA Module 3
SCK: SPI Serial Clock
SCK outputs clock to the slave peripheral
P1.7: Input/Output:
CC
or V
SS
in order to prevent any parasitic current consumption. Port 0
4180E–8051–10/06