MC68HRC908JK3CP Freescale Semiconductor, MC68HRC908JK3CP Datasheet - Page 105
MC68HRC908JK3CP
Manufacturer Part Number
MC68HRC908JK3CP
Description
IC MCU FLASH 8B 8MHZ RC 4K 20DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908JK1CDW.pdf
(212 pages)
Specifications of MC68HRC908JK3CP
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HRC908JK3CP
Manufacturer:
FREECAL
Quantity:
20 000
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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
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