MC68HC908SR12CB Freescale Semiconductor, MC68HC908SR12CB Datasheet - Page 130

• 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: -

Clock Generator Module (CGM)
8.6.2 PLL Bandwidth Control Register
Data Sheet
130
VPR1 and VPR0 — VCO Power-of-Two Range Select Bits
The PLL bandwidth control register (PBWC):
These read/write bits control the VCO’s hardware power-of-two range
multiplier E that, in conjunction with L (See
Programming the
Register.) controls the hardware center-of-range frequency, f
VPR1:VPR0 cannot be written when the PLLON bit is set. Reset
clears these bits.
•
•
•
•
NOTE: Do not program E to a value of 3.
Selects automatic or manual (software-controlled) bandwidth
control mode
Indicates when the PLL is locked
In automatic bandwidth control mode, indicates when the PLL is in
acquisition or tracking mode
In manual operation, forces the PLL into acquisition or tracking
mode
VPR1 and VPR0
PRE1 and PRE0
Clock Generator Module (CGM)
Table 8-3. VPR1 and VPR0 Programming
00
01
10
Table 8-2. PRE1 and PRE0 Programming
00
01
10
11
PLL, and
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
8.6.4 PLL VCO Range Select
E
0
1
2
P
0
1
2
3
8.4.3 PLL
VCO Power-of-Two
Range Multiplier
Prescaler Multiplier
Freescale Semiconductor
1
2
4
Circuits,
1
2
4
8
VRS
8.4.6
.