MC9S08RE16FDER Freescale Semiconductor, MC9S08RE16FDER Datasheet - Page 73
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MC9S08RE16FDER
Manufacturer Part Number
MC9S08RE16FDER
Description
IC MCU 16K FLASH 1K RAM 48-QFN
Manufacturer
Freescale Semiconductor
Series
HCS08r
Specifications of MC9S08RE16FDER
Core Processor
HCS08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
48-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
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Chapter 6
Parallel Input/Output
6.1
This section explains software controls related to parallel input/output (I/O). The MC9S08RC/RD/RE/RG
has five I/O ports that include a total of 39 general-purpose I/O pins (two of these pins are output only and
one pin is input only). Not all of the ports are available in all packages. See
Connections,”
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 (if the pin is configured as an input).
6.2
Parallel I/O features for the MC9S08RC/RD/RE/RG MCUs, depending on specific device and package
choice, include:
Freescale Semiconductor
•
•
•
•
•
•
•
•
•
A total of 39 general-purpose I/O pins in five ports (two pins are output only, one is input only)
High-current drivers on port B pins
Hysteresis input buffers on all inputs
Software-controlled pullups on each input pin
Eight port A pins shared with KBI1
Eight port B pins shared with SCI and TPMCH1
Eight port C pins shared with KBI2 and SPI
Seven port D pins shared with TPMCH0, ACMP, IRQ, RESET, and BKGD/MS
Eight port E pins
Introduction
Features
for more information about the logic and hardware aspects of these pins.
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.
MC9S08RC/RD/RE/RG Data Sheet, Rev. 1.11
NOTE
Chapter 2, “Pins and
73
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