MC9S08JM60CLH Freescale, MC9S08JM60CLH Datasheet - Page 81

• Manufacturer Part Number: MC9S08JM60CLH
• Manufacturer: Freescale

Specifications of MC9S08JM60CLH

• Cpu Family: HCS08
• Device Core Size: 8b
• Frequency (max): 24MHz
• Interface Type: SCI/SPI
• Total Internal Ram Size: 4KB
• # I/os (max): 51
• Number Of Timers - General Purpose: 8
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 12-chx12-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: LQFP
• Program Memory Type: Flash
• Program Memory Size: 60KB
• Lead Free Status / RoHS Status: Compliant

Chapter 6
Parallel Input/Output
6.1
This chapter explains software controls related to parallel input/output (I/O). The MC9S08JM60 has seven
I/O ports which include a total of 51 general-purpose I/O pins. See
more information about the logic and hardware aspects of these pins.
Not all pins are available on all devices. See
specific device.
Many of the I/O pins are shared with on-chip peripheral functions, as shown in
modules have priority over the I/Os, so when a peripheral is enabled, the I/O functions are disabled.
After reset, the shared peripheral functions are disabled so that the pins are controlled by the parallel I/O.
All of the parallel I/O are configured as inputs (PTxDDn = 0). The pin control functions for each pin are
configured as follows: slew rate control enabled (PTxSEn = 1), low drive strength selected (PTxDSn = 0),
and internal pullups disabled (PTxPEn = 0).
6.2
Reading and writing of parallel I/O is done through the port data registers. The direction, input or output,
is controlled through the port data direction registers. The parallel I/O port function for an individual pin
is illustrated in the block diagram below.
Freescale Semiconductor
Introduction
Port Data and Data Direction
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 must either enable on-chip pullup devices
or change the direction of unconnected pins to outputs so the pins do not
float.
MC9S08JM60 Series Data Sheet, Rev. 3
Table 2-1
NOTE
to determine which functions are available for a
Chapter 2, “Pins and
Table
2-1. The peripheral
Connections,” for
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