MC68HC908JL8CP Freescale Semiconductor, MC68HC908JL8CP Datasheet - Page 43

• Manufacturer Part Number: MC68HC908JL8CP
• Description: IC MCU 8K FLASH 8MHZ 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JL8CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 23
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 13x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

3.4 Configuration Register 2 (CONFIG2)
IRQPUD — IRQ Pin Pull-Up Disable Bit
LVIT1, LVIT0 — LVI Trip Voltage Selection Bits
STOP_ICLKDIS — Internal Oscillator Stop Mode Disable Bit
3.5 Mask Option Register (MOR)
The mask option register (MOR) is implemented as a byte within the FLASH memory, and therefore can
only be written during a programming sequence of the FLASH memory. This register is read after a
power-on reset to determine the type of oscillator selected. (See
OSCSEL — Oscillator Select Bit
Freescale Semiconductor
IRQPUD disconnects the internal pull-up on the IRQ pin.
Detail description of trip voltage selection is given in
Setting STOP_ICLKDIS disables the internal oscillator during stop mode. When this bit is cleared, the
internal oscillator continues to operate in stop mode. Reset clears this bit.
OSCSEL selects the oscillator type for the MCU. The erased or unprogrammed state of this bit is
logic 1, selecting the crystal oscillator option. This bit is unaffected by reset.
1 = Internal pull-up is disconnected
0 = Internal pull-up is connected between IRQ pin and V
1 = Internal oscillator disabled during stop mode
0 = Internal oscillator enabled during stop mode
1 = Crystal oscillator
0 = RC oscillator
One-time writable register after each reset. LVIT1 and LVIT0 reset to logic 0 by a power-on reset (POR) only.
Non-volatile FLASH register; write by programming.
Address:
Address:
Erased:
Reset:
Reset:
Read:
Read:
Write:
Write:
POR:
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
OSCSEL
IRQPUD
$FFD0
$001E
Bit 7
Bit 7
R
R
0
0
1
Figure 3-2. Configuration Register 2 (CONFIG2)
Figure 3-3. Mask Option Register (MOR)
= Reserved
= Reserved
R
R
6
0
0
6
1
R
R
5
0
0
5
1
Not affected Not affected
Unaffected by reset
LVIT1
R
4
0
4
1
Chapter 15 Low Voltage Inhibit
LVIT0
R
3
0
3
1
DD
Chapter 6 Oscillator
R
R
2
0
0
2
1
Configuration Register 2 (CONFIG2)
R
R
1
0
0
1
1
ICLKDIS
STOP_
(OSC).)
Bit 0
Bit 0
(LVI).
R
0
0
1
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