MC68HC908SR12CB Freescale Semiconductor, MC68HC908SR12CB Datasheet - Page 111

• Manufacturer Part Number: MC68HC908SR12CB
• Description: IC MCU 12K FLASH 8MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908SR12CB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, Temp Sensor
• Number Of I /o: 29
• Program Memory Size: 12KB (12K 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 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

8.1 Contents
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Data Sheet — MC68HC908SR12•MC68HC08SR12
8.2
8.3
8.4
8.4.1
8.4.2
8.4.3
8.4.4
8.4.5
8.4.6
8.4.7
8.4.8
8.4.9
8.5
8.5.1
8.5.2
8.5.3
8.5.4
8.5.5
8.5.6
8.5.7
8.5.8
8.6
8.6.1
8.6.2
8.6.3
8.6.4
8.6.5
Section 8. Clock Generator Module (CGM)
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
CGM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Oscillator Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Phase-Locked Loop Circuit (PLL) . . . . . . . . . . . . . . . . . . . 116
PLL Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Acquisition and Tracking Modes . . . . . . . . . . . . . . . . . . . . 118
Manual and Automatic PLL Bandwidth Modes. . . . . . . . . . 118
Programming the PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Special Programming Exceptions . . . . . . . . . . . . . . . . . . . 124
Base Clock Selector Circuit . . . . . . . . . . . . . . . . . . . . . . . . 124
CGM External Connections . . . . . . . . . . . . . . . . . . . . . . . . 125
External Filter Capacitor Pin (CGMXFC) . . . . . . . . . . . . . . 126
PLL Analog Power Pin (V
PLL Analog Ground Pin (V
Oscillator Output Frequency Signal (CGMXCLK) . . . . . . . 126
CGM Reference Clock (CGMRCLK) . . . . . . . . . . . . . . . . . 126
CGM VCO Clock Output (CGMVCLK) . . . . . . . . . . . . . . . . 127
CGM Base Clock Output (CGMOUT). . . . . . . . . . . . . . . . . 127
CGM CPU Interrupt (CGMINT) . . . . . . . . . . . . . . . . . . . . . 127
PLL Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
PLL Bandwidth Control Register . . . . . . . . . . . . . . . . . . . .130
PLL Multiplier Select Registers . . . . . . . . . . . . . . . . . . . . . 132
PLL VCO Range Select Register . . . . . . . . . . . . . . . . . . . .133
PLL Reference Divider Select Register . . . . . . . . . . . . . . . 134
Clock Generator Module (CGM)
DDA
SSA
) . . . . . . . . . . . . . . . . . . . . . . 126
) . . . . . . . . . . . . . . . . . . . . . 126
Data Sheet
111