MC68HC908GP32CP Freescale Semiconductor, MC68HC908GP32CP Datasheet - Page 132

• Manufacturer Part Number: MC68HC908GP32CP
• Description: IC MCU 8MHZ 32K FLASH 40-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GP32CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 33
• Program Memory Size: 32KB (32K 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 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• For Use With: M68EVB908GP32 - BOARD EVALUATION FOR HC908GP32
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Clock Generator Module (CGMC)
7.6.6 PLL Reference Divider Select Register
Technical Data
130
NOTE:
NOTE:
NOTE:
Address:
PMDS may be called PRDS on other HC08 derivatives.
The PLL reference divider select register (PMDS) contains the
programming information for the modulo reference divider.
RDS3–RDS0 — Reference Divider Select Bits
The reference divider select bits have built-in protection such that they
cannot be written when the PLL is on (PLLON = 1).
The default divide value of 1 is recommended for all applications.
Bit7–Bit4 — Unimplemented Bits
Reset:
Read:
Write:
These read/write bits control the modulo reference divider that selects
the reference division factor, R. (See
Programming the
PLLON bit in the PCTL is set. A value of $00 in the reference divider
select register configures the reference divider the same as a value of
$01. (See
initializes the register to $01 for a default divide value of 1.
These bits have no function and always read as logic 0s.
Figure 7-9. PLL Reference Divider Select Register (PMDS)
$003B
Bit 7
0
0
Clock Generator Module (CGMC)
7.4.7 Special Programming
= Unimplemented
6
0
0
PLL.) RDS7–RDS0 cannot be written when the
5
0
0
MC68HC908GP32
4
0
0
7.4.3 PLL Circuits
RDS3
3
0
Exceptions.) Reset
•
RDS2
MC68HC08GP32
2
0
RDS1
1
0
and
MOTOROLA
—
7.4.6
RDS0
Bit 0
Rev. 6
1