MC68HC908JL3CDW Freescale Semiconductor, MC68HC908JL3CDW Datasheet - Page 105

• Manufacturer Part Number: MC68HC908JL3CDW
• Description: IC MCU 8MHZ 4K FLASH 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JL3CDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 23
• 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: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

MC68H(R)C908JL3
Freescale Semiconductor
NOTES:
1. X-tal circuit replaced by RC circuit for MC68HRC908xxx
2. External oscillator must have a 50% duty cycle.
3. Affects high voltage entry to monitor mode only (SW2 at position C):
4. SW2: Position C — High voltage entry to monitor mode.
5. See
SW2: Position D — Bus clock source = X-TAL or RC oscillator.
DB-25
10 µF
10 µF
SW1: Position A — Bus clock = OSC1 ÷ 4
SW1: Position B — Bus clock = OSC1 ÷ 2
2
3
7
Table 18-4
+
+
1
3
4
2
5
6
for IRQ1 voltage level requirements.
V
—
DD
Input clock = OSC1; Bus clock depends on SW1.
Bus clock = XTALCLK ÷ 4 or RCCLK ÷ 4.
Rev. 1.1
MC145407
RC CIRCUIT
(FOR MC68HRC908xxx)
See
values vs. frequency.
Figure 18-1
Figure 9-1. Monitor Mode Circuit
20
18
17
19
16
15
OSC1
OSC2
+
+
10 µF
10 µF
for component
Monitor ROM (MON)
V
V
DD
DD
(SEE NOTE 1)
20 pF
X-TAL CIRCUIT
9.8304MHz
(SEE NOTE 2)
(SEE NOTE 4 AND 5)
1
2
6
4
7
MC74HC125
10k Ω
V
DD
20 pF
(SEE NOTE 3)
10k Ω
14
3
5
V
DD
C
D
C
D
C
D
V
DD
+ V
10 kΩ
HI
A
B
SW2
0.1 µF
V
DD
10 kΩ
10 kΩ
SW1
0.1 µF
10 kΩ
10 kΩ
V
DD
V
DD
V
Monitor ROM (MON)
DD
Technical Data
RST
HC908JL3
HC908JK3
HC908JK1
IRQ1
V
V
OSC1
OSC2
PTB3
PTB0
PTB1
PTB2
DD
SS
103