AT89C5122D-PSTUM Atmel, AT89C5122D-PSTUM Datasheet - Page 51

• Manufacturer Part Number: AT89C5122D-PSTUM
• Description: IC 8051 MCU FLASH 32K 64QFN
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C5122D-PSTUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: SmartCard, SPI, UART/USART, USB
• Peripherals: LED, POR, WDT
• Number Of I /o: 46
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFN
• For Use With: AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-03 - KIT STARTER FOR MCU AT8XC5122/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

I/O Port Definition
Ports vs Packages
Port 0
4202F–SCR–07/2008
Table 30. I/O Number vs Packages
Port 0 has the following functions:
Port 0 has the following configurations:
VQFP64
VQFP32
PLCC28
QFN64
QFN32
–
–
–
–
–
Default function: Port 0 is an 8-bit I/O port.
Alternate function: Port 0 is also the multiplexed low-order address and data
bus during accesses to external Program and Data Memory. In this
application, it uses strong internal pull-ups when emitting 1’s and it can drive
CMOS inputs without external pull-ups.
Default configuration: open drain bi-directional I/O port. Port 0 pins that have
1’s written to them float, and in this state they can be used as high-
impedance inputs.
Configuration 2: Low speed output, “KB_OUT”
Configuration 3: Push-pull output
P0
8
-
-
P1
8
8
6
AT83R5122, AT8xC5122/23
P2
8
-
-
P3
8
8
6
P4
6
-
-
P5
8
1
1
Total
46
17
13
51