MC68HC908JK3ECP Freescale Semiconductor, MC68HC908JK3ECP Datasheet - Page 139

• Manufacturer Part Number: MC68HC908JK3ECP
• Description: IC MCU 4K FLASH 8MHZ 20-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JK3ECP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

16.7 5V Oscillator Characteristics
Freescale Semiconductor
Crystal frequency, XTALCLK
RC oscillator frequency, RCCLK
External clock
Crystal load capacitance
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
RC oscillator external R
RC oscillator external C
1. No more than 10% duty cycle deviation from 50%.
2. Consult crystal vendor data sheet.
3. Not required for high frequency crystals.
reference frequency
14
12
10
8
6
4
2
0
0
(2), (3)
Characteristic
(1)
(2)
(2)
(2)
10
Table 16-6. Oscillator Component Specifications (5V)
Figure 16-1. RC vs. Frequency (5V @25°C)
MC68HC908JL3E Family Data Sheet, Rev. 4
RESISTOR, R
20
EXT
(kΩ)
30
f
f
Symbol
OSCXCLK
OSCXCLK
f
RCCLK
R
C
C
C
C
R
R
EXT
EXT
L
1
2
B
S
C
5V @ 25°C
40
EXT
Min
= 10 pF
—
dc
—
—
—
—
—
—
2
See
50
10 MΩ
2 × C
2 × C
Typ
10
10
10
—
—
—
Figure 16-1
L
L
V
DD
5V Oscillator Characteristics
R
EXT
Max
32
12
32
—
—
—
—
—
—
OSC1
MCU
C
EXT
MHz
MHz
MHz
Unit
pF
139