MC68HC908JK3ECP Freescale Semiconductor, MC68HC908JK3ECP Datasheet - Page 142

• 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: -

Electrical Specifications
16.10 3V Oscillator Characteristics
142
Crystal frequency, XTALCLK
RC oscillator frequency, RCCLK
External clock reference frequency
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.
14
12
10
8
6
4
2
0
0
(2), (3)
Characteristic
(2)
(2)
(2)
10
Table 16-9. Oscillator Component Specifications (3V)
(1)
Figure 16-2. RC vs. Frequency (3V @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
3V @ 25°C
EXT
40
= 10 pF
Min
—
dc
—
—
—
—
—
—
2
See
50
10 MΩ
2 × C
2 × C
Typ
10
—
—
—
Figure 16-2
8
8
L
L
V
DD
R
EXT
Freescale Semiconductor
Max
16
12
16
—
—
—
—
—
—
OSC1
MCU
C
EXT
MHz
MHz
MHz
Unit
pF