MC68HC908AB32CFU Freescale Semiconductor, MC68HC908AB32CFU Datasheet - Page 131

• Manufacturer Part Number: MC68HC908AB32CFU
• Description: IC MCU 8MHZ 32K FLASH 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908AB32CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM
• Number Of I /o: 51
• 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 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

9.1 Contents
MC68HC908AB32
Freescale Semiconductor
Technical Data — MC68HC908AB32
—
Rev. 1.1
Section 9. Clock Generator Module (CGM)
9.2
9.3
9.4
9.4.1
9.4.2
9.4.2.1
9.4.2.2
9.4.2.3
9.4.2.4
9.4.2.5
9.4.3
9.4.4
9.5
9.5.1
9.5.2
9.5.3
9.5.4
9.5.5
9.5.6
9.5.7
9.5.8
9.6
9.6.1
9.6.2
9.6.3
9.7
9.8
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
CGM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Crystal Oscillator Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Phase-Locked Loop (PLL) Circuit . . . . . . . . . . . . . . . . . . . 135
Base Clock Selector Circuit . . . . . . . . . . . . . . . . . . . . . . . . 140
CGM External Connections . . . . . . . . . . . . . . . . . . . . . . . . 140
Crystal Amplifier Input Pin (OSC1). . . . . . . . . . . . . . . . . . . 142
Crystal Amplifier Output Pin (OSC2) . . . . . . . . . . . . . . . . . 142
External Filter Capacitor Pin (CGMXFC) . . . . . . . . . . . . . . 142
PLL Analog Power Pin (V
Oscillator Enable Signal (SIMOSCEN). . . . . . . . . . . . . . . . 142
Crystal Output Frequency Signal (CGMXCLK) . . . . . . . . . 143
CGM Base Clock Output (CGMOUT). . . . . . . . . . . . . . . . . 143
CGM CPU Interrupt (CGMINT) . . . . . . . . . . . . . . . . . . . . . 143
PLL Control Register (PCTL) . . . . . . . . . . . . . . . . . . . . . . . 144
PLL Bandwidth Control Register (PBWC) . . . . . . . . . . . . . 146
PLL Programming Register (PPG) . . . . . . . . . . . . . . . . . . . 148
Clock Generator Module (CGM)
PLL Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Acquisition and Tracking Modes . . . . . . . . . . . . . . . . . . 136
Manual and Automatic PLL Bandwidth Modes . . . . . . . 136
Programming the PLL . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Special Programming Exceptions . . . . . . . . . . . . . . . . . 139
DDA
) . . . . . . . . . . . . . . . . . . . . . . 142
Technical Data
131