MC68HC908JK8CP Freescale Semiconductor, MC68HC908JK8CP Datasheet - Page 191
MC68HC908JK8CP
Manufacturer Part Number
MC68HC908JK8CP
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC908JK8CP.pdf
(212 pages)
Specifications of MC68HC908JK8CP
Cpu Family
HC08
Device Core Size
8b
Frequency (max)
8MHz
Interface Type
SCI
Program Memory Type
Flash
Program Memory Size
8KB
Total Internal Ram Size
256Byte
# I/os (max)
15
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
13-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Through Hole
Pin Count
20
Package Type
PDIP
Lead Free Status / Rohs Status
Not Compliant
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17.10 3V 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. Typical value reflect average measurements at midpoint of voltage range, 25 °C only. See
2. No more than 10% duty cycle deviation from 50%.
3. Fundamental mode crystals only.
4. Consult crystal vendor data sheet.
5. Not required for high frequency crystals.
14
12
10
8
6
4
2
0
0
(3), (5)
Characteristic
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
(4)
(3)
(3)
10
(3)
(2)
Figure 17-4. RC vs. Frequency (3V @25°C)
Table 17-9. Oscillator Specifications (3V)
Resistor, R
20
EXT
30
f
Symbol
(kΩ)
XTALCLK
f
RCCLK
R
C
f
f
ICLK
OSC
R
R
C
C
C
EXT
EXT
B
S
L
1
2
C
3V @ 25°C
EXT
= 10 pF
40
Min
2M
dc
—
—
—
—
—
—
See
50
10 MΩ
Figure 17-4
2 × C
2 × C
45k
Typ
—
—
—
—
—
10
(1)
L
L
V
DD
Figure 17-5
3V Oscillator Characteristics
R
EXT
Max
16M
16M
10M
—
—
—
—
—
—
OSC1
for plot.
MCU
C
EXT
Unit
Hz
Hz
Hz
Hz
pF
Ω
191
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