MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 99

• Manufacturer Part Number: MC68HC908GR8CDW
• Description: IC MCU 8K FLASH 8MHZ 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR8CDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 17
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Technical Data — MC68HC908GR8
7.1 Contents
7.2 Introduction
MC68HC908GR8 — Rev 4.0
MOTOROLA
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
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.
Section 7. Clock Generator Module (CGMC)
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
CGMC Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Special Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Acquisition/Lock Time Specifications . . . . . . . . . . . . . . . . . . .125
Clock Generator Module (CGMC)
Go to: www.freescale.com
Technical Data
99