MC9S08GT32CFDE Freescale Semiconductor, MC9S08GT32CFDE Datasheet - Page 77

• Manufacturer Part Number: MC9S08GT32CFDE
• Description: IC MCU 32K FLASH 20MHZ 48-QFN
• Manufacturer: Freescale Semiconductor
• Series: HCS08r

Specifications of MC9S08GT32CFDE

• Core Processor: HCS08
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 39
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QFN
• Controller Family/series: HCS08
• No. Of I/o's: 39
• Ram Memory Size: 2KB
• Cpu Speed: 40MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• For Use With: M68DEMO908GB60E - BOARD DEMO MC9S08GB60M68EVB908GB60E - BOARD EVAL FOR MC9S08GB60
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Chapter 6 Parallel Input/Output
6.1
This section explains software controls related to parallel input/output (I/O). The MC9S08GBxx has seven
I/O ports which include a total of 56 general-purpose I/O pins (one of these pins is output only). The
MC9S08GTxx has six I/O ports which include a total of up to 39 general-purpose I/O pins, depending on
the package (one pin, PTG0, is output only). See
about the logic and hardware aspects of these pins.
Many of these pins are shared with on-chip peripherals such as timer systems, external interrupts, or
keyboard interrupts. When these other modules are not controlling the port pins, they revert to
general-purpose I/O control. For each I/O pin, a port data bit provides access to input (read) and output
(write) data, a data direction bit controls the direction of the pin, and a pullup enable bit enables an internal
pullup device (provided the pin is configured as an input), and a slew rate control bit controls the rise and
fall times of the pins.
Freescale Semiconductor
Introduction
Not all general-purpose I/O pins are available on all packages. To avoid
extra current drain from floating input pins, the user’s reset initialization
routine in the application program should either enable on-chip pullup
devices or change the direction of unconnected pins to outputs so the pins
do not float.
MC9S08GB/GT Data Sheet, Rev. 2.3
Chapter 2, “Pins and
NOTE
Connections,” for more information
77