MC68HC908MR8CP Freescale Semiconductor, MC68HC908MR8CP Datasheet - Page 131

• Manufacturer Part Number: MC68HC908MR8CP
• Description: IC MCU 8K FLASH 8MHZ PWM 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR8CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 12
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

8.6.3 PLL Programming Register
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
NOTE:
The PLL programming register (PPG) contains the programming
information for the modulo feedback divider and the programming
information for the hardware configuration of the VCO.
MUL[7:4] — Multiplier Select Bits
The multiplier select bits have built-in protection that prevents them from
being written when the PLL is on (PLLON = 1).
Reset:
dress:
Read:
Write:
Ad-
These read/write bits control the modulo feedback divider that selects
the VCO frequency multiplier, N. See
8.4.2.4 Programming the
bits configures the modulo feedback divider the same as a value of
$1. Reset initializes these bits to $6 to give a default multiply value
of 6.
$005E
MUL7
MUL7:MUL6:MUL5:MUL4
Bit 7
0
Figure 8-7. PLL Programming Register (PPG)
Clock Generator Module (CGM)
Table 8-1. VCO Frequency Multiplier (N) Selection
MUL6
0000
0001
0010
0011
1101
1110
1111
6
1
MUL5
5
1
PLL. A value of $0 in the multiplier select
MUL4
4
0
VCO Frequency Multiplier (N)
VRS7
8.4.2.1 PLL Circuits
3
0
Clock Generator Module (CGM)
VRS6
2
1
13
14
15
1
1
2
3
VRS5
CGM Registers
1
1
Technical Data
and
VRS4
Bit 0
0
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