MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 303

• Manufacturer Part Number: MC908AP32CFBE
• Manufacturer: Freescale

Specifications of MC908AP32CFBE

• Cpu Family: HC08
• Device Core Size: 8b
• Frequency (max): 8MHz
• Interface Type: SCI/SPI
• Total Internal Ram Size: 2KB
• # I/os (max): 32
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PQFP
• Program Memory Type: Flash
• Program Memory Size: 32KB
• Lead Free Status / RoHS Status: Compliant

22.7 5V Oscillator Characteristics
Freescale Semiconductor
Internal oscillator clock frequency
External reference clock to OSC1
Crystal reference frequency
Crystal load capacitance
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
External RC clock frequency
RC oscillator external R
RC oscillator external C
1. The oscillator circuit operates at V
2. Typical value reflect average measurements at midpoint of voltage range, 25 °C only.
3. No more than 10% duty cycle deviation from 50%. The max. frequency is limited by an EMC filter.
4. Crystal manufacturer value.
5. Capacitor on OSC1 pin. Does not include parasitic capacitance due to package, pin, and board.
6. Capacitor on OSC2 pin. Does not include parasitic capacitance due to package, pin, and board.
8
6
4
2
0
0
Characteristic
(4)
(5)
(6)
10
(1)
(3)
Table 22-6. Oscillator Specifications (5V)
REG
Resistor, R
MC68HC908AP Family Data Sheet, Rev. 4
.
20
Figure 22-1. RC vs. Frequency
EXT
C
V
30
f
Symbol
XTALCLK
(kΩ)
f
DD
EXT
RCCLK
R
C
f
f
ICLK
OSC
R
R
C
C
C
EXT
EXT
B
S
= 5V, @ 25°C
L
1
2
= 10 pF
40
Min
64k
100
30
dc
—
—
—
—
1
See
50
32.768
Figure 22-1
88k
12.5
Typ
330
15
15
10
10
(2)
V
REG
5V Oscillator Characteristics
R
EXT
104k
7.6M
Max
32M
100
470
22
—
—
—
—
OSC1
MCU
C
EXT
Unit
kHz
MΩ
Hz
Hz
kΩ
Hz
pF
pF
pF
pF
Ω
301