MC68HC908LJ24CPB Freescale Semiconductor, MC68HC908LJ24CPB Datasheet - Page 104

• Manufacturer Part Number: MC68HC908LJ24CPB
• Description: IC MCU 24K FLASH 8MHZ SPI 64LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908LJ24CPB

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, IRSCI, SPI
• Peripherals: LCD, LVD, POR, PWM
• Number Of I /o: 40
• Program Memory Size: 24KB (24K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Oscillator (OSC)
Data Sheet
104
*R
See
Refer to manufacturer’s data.
S
STOP_XCLKEN
can be zero (shorted) when used with higher-frequency crystals.
STOP_IRCDIS
Section 24.
MCU
CONFIG2
CONFIG2
for component value requirements.
From SIM
INTERNAL RC OSCILLATOR
CRYSTAL OSCILLATOR
The reference clock for the CGM, real time clock module (RTC) and
other MCU sub-systems is driven by the crystal oscillator. The COP
module is always driven by internal RC clock.
The internal RC oscillator runs continuously after a POR or reset and is
always available in run and wait modes. In stop mode, it can be disabled
by setting the STOP_IRCDIS bit in CONFIG2 register.
Figure
Figure 7-1. Oscillator Module Block Diagram
7-1. shows the block diagram of the oscillator module.
OSC1
EN
INTERNAL RC
OSCILLATOR
Oscillator (OSC)
C
1
32.768kHz
(typical)
R
X
B
1
OSC2
R
C
S
*
2
CGMRCLK
CGMXCLK
MC68HC908LJ24/LK24 — Rev. 2.1
ICLK
Freescale Semiconductor
To SIM, COP
To CGM PLL
To RTC, ADC, LCD,
CGM Clock Selection MUX