MC68HC908GR8CD Freescale Semiconductor, MC68HC908GR8CD Datasheet - Page 255

• Manufacturer Part Number: MC68HC908GR8CD
• Description: 8-bit Microcontrollers - MCU 8 Bit 8MHz
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908GR8CD

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: HC08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 384 B
• Operating Supply Voltage: 3 V to 5 V
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Data Rom Size: 64 KB
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 21
• Program Memory Type: Flash

23.8 Clock Generation Module Characteristics
23.8.1 CGM Component Specifications
23.8.2 CGM Electrical Specifications
Freescale Semiconductor
Crystal reference frequency
Crystal load capacitance
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
Operating voltage
Operating temperature
Crystal reference frequency
Range nominal multiplier
VCO center-of-range frequency
Medium-voltage VCO center-of-range frequency
VCO range linear range multiplier
VCO power-of-two range multiplier
VCO multiply factor
VCO prescale multiplier
Reference divider factor
VCO operating frequency
Bus operating frequency
Bus frequency @ medium voltage
Manual acquisition time
Automatic lock time
PLL jitter
External clock input frequency PLL disabled
External clock input frequency PLL enabled
1. Crystal manufacturer value.
2. Capacitor on OSC1 pin. Does not include parasitic capacitance due to package, pin, and board.
3. Capacitor on OSC2 pin. Does not include parasitic capacitance due to package, pin, and board.
1. 5.0 V ± 10% V
2. 3.0 V ± 10% V
3. Deviation of average bus frequency over 2 ms. N = VCO multiplier.
(3)
(3)
DD
DD
Characteristic
(1)
(1)
(2)
Description
(2)
(1)
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
(2)
(2)
Symbol
Symbol
f
f
f
f
f
f
f
f
t
t
f
f
V
RCLK
VCLK
XCLK
NOM
VRS
Lock
Lock
OSC
OSC
VRS
BUS
BUS
2
2
N
T
R
f
DD
L
C
C
C
R
R
J
E
P
L
1
2
B
S
Clock Generation Module Characteristics
38.4 k
38.4 k
38.4 k
30 k
Min
–40
2.7
30
Min
100
—
—
—
—
—
dc
1
1
1
1
0
30
1
—
—
—
1
32.768
32.768
38.4
Typ
12.5
Typ
330
25
—
—
—
—
—
—
—
—
—
—
—
—
—
—
15
15
10
1
1
0.025% x
f
40.0 M
40.0 M
40.0 M
32.8 M
2
RCLK
1.5 M
4095
Max
P
125
100
255
Max
5.5
8.2
4.1
100
470
—
15
50
50
22
—
—
—
4
8
N/4
x
MHz
MHz
Unit
Unit
kHz
kHz
kHz
MΩ
ms
ms
Hz
Hz
Hz
Hz
Hz
Hz
kΩ
pF
pF
pF
o
V
C
255