MC68HC908SR12CFA Freescale Semiconductor, MC68HC908SR12CFA Datasheet - Page 379
MC68HC908SR12CFA
Manufacturer Part Number
MC68HC908SR12CFA
Description
MICROCONTROLLER 48 PIN
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908SR12MFAE.pdf
(404 pages)
Specifications of MC68HC908SR12CFA
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, Temp Sensor
Number Of I /o
31
Program Memory Size
12KB (12K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
Q1145673
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC908SR12CFA
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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24.11 3.0V Oscillator Characteristics
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Notes:
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
External resistor
External capacitor
1. No more than 10% duty cycle deviation from 50%.
2. Fundamental mode crystals only.
3. Consult crystal manufacturer’s data.
4. Not Required for high frequency crystals.
2.5
1.5
0.5
3
2
1
0
0
(4)
Characteristic
(3)
Figure 24-2. RC vs. Bus Frequency (3V @25°C)
5
(2)
Table 24-9. 3V Oscillator Specifications
(1)
Resistor R
10
Electrical Specifications
EXT
(kΩ)
Symbol
f
f
RCCLK
R
C
f
f
XCLK
ICLK
OSC
R
R
C
C
C
EXT
EXT
B
S
L
1
2
C
3V @ 25°C
EXT
15
= 10 pF
13.8k
Min
2M
dc
—
—
—
—
—
—
See
20
2 × C
2 × C
32.768k
Figure 24-2
17.2k
100k
10M
Typ
10
—
—
3.0V Oscillator Characteristics
L
—
L
V
DD
(25p)
(25p)
f
RCCLK
Electrical Specifications
R
EXT
= f
4.9152M
OSC1
20.6k
16M
10M
OP
Max
—
—
—
—
—
—
× 4
MCU
C
Data Sheet
EXT
Unit
Hz
Hz
Hz
Hz
pF
Ω
Ω
Ω
F
F
379
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