MC908AZ32ACFU Freescale Semiconductor, MC908AZ32ACFU Datasheet - Page 92

• Manufacturer Part Number: MC908AZ32ACFU
• Description: IC MCU 32K FLASH 8.4MHZ 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908AZ32ACFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: CAN, SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 40
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 15x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Clock Generator Module (CGM)
CGMXCLK can be used by other modules which require precise timing for operation. The duty cycle of
CGMXCLK is not guaranteed to be 50% and depends on external factors, including the crystal and related
external components.
An externally generated clock also can feed the OSC1 pin of the crystal oscillator circuit. Connect the
external clock to the OSC1 pin and let the OSC2 pin float.
92
OSC1
CGMRDV
DETECTOR
DETECTOR
CGMVDV
PHASE
LOCK
LOCK
V
DDA
CGMRCLK
CGMXFC
AUTO
FREQUENCY
BANDWIDTH
MUL7–MUL4
CONTROL
Figure 8-1. CGM Block Diagram
DIVIDER
MC68HC908AZ32A Data Sheet, Rev. 2
FILTER
LOOP
ACQ
PLL ANALOG
V
SS
CIRCUIT
SELECT
CLOCK
PLLIE
BCS
CONTROLLED
OSCILLATOR
VRS7–VRS4
INTERRUPT
CONTROL
CGMVCLK
VOLTAGE
PLLF
÷
2
A
B S*
CGMINT
*When S = 1,
CGMOUT = B
Freescale Semiconductor
CGMXCLK
CGMOUT
USER MODE
MONITOR MODE
PTC3