MC68HC908GP32CP Freescale Semiconductor, MC68HC908GP32CP Datasheet - Page 108

• Manufacturer Part Number: MC68HC908GP32CP
• Description: IC MCU 8MHZ 32K FLASH 40-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• For Use With: M68EVB908GP32 - BOARD EVALUATION FOR HC908GP32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Clock Generator Module (CGMC)
7.2 Introduction
Technical Data
106
7.6.5
7.6.6
7.7
7.8
7.8.1
7.8.2
7.8.3
7.9
7.9.1
7.9.2
7.9.3
This section describes the clock generator module. The CGMC
generates the crystal clock signal, CGMXCLK, which operates at the
frequency of the crystal. The CGMC also generates the base clock
signal, CGMOUT, which is based on either the crystal clock divided by
two or the phase-locked loop (PLL) clock, CGMVCLK, divided by two. In
user mode, CGMOUT is the clock from which the SIM derives the
system clocks, including the bus clock, which is at a frequency of
CGMOUT/2. In monitor mode, PTC3 determines the bus clock. The PLL
is a fully functional frequency generator designed for use with crystals or
ceramic resonators. The PLL can generate an 8-MHz bus frequency
using a 32-kHz crystal.
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Special Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Acquisition/Lock Time Specifications . . . . . . . . . . . . . . . . . . .133
PLL VCO Range Select Register . . . . . . . . . . . . . . . . . . . . 129
PLL Reference Divider Select Register . . . . . . . . . . . . . . . 130
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
CGMC During Break Interrupts . . . . . . . . . . . . . . . . . . . . . 132
Acquisition/Lock Time Definitions. . . . . . . . . . . . . . . . . . . . 133
Parametric Influences on Reaction Time . . . . . . . . . . . . . . 134
Choosing a Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Clock Generator Module (CGMC)
MC68HC908GP32
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MC68HC08GP32
MOTOROLA
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Rev. 6