MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 109

• Manufacturer Part Number: MC68HC908GR8CDW
• Description: IC MCU 8K FLASH 8MHZ 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR8CDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 17
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

7.4.7 Special Programming Exceptions
MC68HC908GR8 — Rev 4.0
MOTOROLA
Table 7-1
notation):
The programming method described in
account for three possible exceptions. A value of 0 for R, N, or L is
meaningless when used in the equations given. To account for these
exceptions:
(See
Freescale Semiconductor, Inc.
•
•
2.4576 MHz
4.9152 MHz
7.3728 MHz
For More Information On This Product,
Base Clock Selector
A 0 value for R or N is interpreted exactly the same as a value of 1.
A 0 value for L disables the PLL and prevents its selection as the
source for the base clock.
2.0 MHz
2.5 MHz
4.0 MHz
5.0 MHz
8.0 MHz
c. In the PLL multiplier select register low (PMSL) and the PLL
d. In the PLL VCO range select register (PMRS), program the
e. In the PLL reference divider select register (PMDS), program
f
BUS
Clock Generator Module (CGMC)
provides numeric examples (numbers are in hexadecimal
multiplier select register high (PMSH), program the binary
equivalent of N.
binary coded equivalent of L.
the binary coded equivalent of R.
Go to: www.freescale.com
Table 7-1. Numeric Example
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
32.768 kHz
f
Circuit.)
RCLK
Programming the PLL
R
1
1
1
1
1
1
1
1
Clock Generator Module (CGMC)
12C
1E9
3D1
132
258
263
384
F5
N
Functional Description
P
0
0
0
0
0
0
0
0
Technical Data
E
0
1
1
1
2
2
2
2
does not
D1
D1
C0
D0
80
83
80
82
L
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