MC68HC908JL8CP Freescale Semiconductor, MC68HC908JL8CP Datasheet - Page 41

• 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: -

Chapter 3
Configuration and Mask Option Registers (CONFIG & MOR)
3.1 Introduction
This section describes the configuration registers, CONFIG1 and CONFIG2; and the mask option register
(MOR).
The configuration registers enable or disable these options:
The mask option register selects the oscillator option:
3.2 Functional Description
The configuration registers are used in the initialization of various options. The configuration registers can
be written once after each reset. All of the configuration register bits are cleared during reset. Since the
various options affect the operation of the MCU, it is recommended that these registers be written
immediately after reset. The configuration registers are located at $001E and $001F. The configuration
registers may be read at anytime.
The mask option register (MOR) is used to select the oscillator option for the MCU: crystal oscillator or
RC oscillator. The MOR is implemented as a byte in FLASH memory. Hence, writing to the MOR requires
programming the byte.
Freescale Semiconductor
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Computer operating properly module (COP)
COP timeout period (2
Internal oscillator during stop mode
Low voltage inhibit (LVI) module
LVI module voltage trip point selection
STOP instruction
Stop mode recovery time (32 or 4096 ICLK cycles)
Pull-up on IRQ pin
Crystal or RC
The options except LVIT[1:0] are one-time writable by the user after each
reset. The LVIT[1:0] bits are one-time writable by the user only after each
POR (power-on reset). The CONFIG registers are not in the FLASH
memory but are special registers containing one-time writable latches after
each reset. Upon a reset, the CONFIG registers default to predetermined
settings as shown in
MC68HC908JL8/JK8 • MC68HC08JL8/JK8 • MC68HC908KL8 Data Sheet, Rev. 3.1
13
–2
4
or 2
Figure 3-1
18
–2
4
ICLK cycles)
and
NOTE
Figure 3-2.
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