MC908LJ24CPKE Freescale Semiconductor, MC908LJ24CPKE Datasheet - Page 170

• Manufacturer Part Number: MC908LJ24CPKE
• Description: IC MCU 8BIT 24K FLASH 80-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908LJ24CPKE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, IRSCI, SPI
• Peripherals: LCD, LVD, POR, PWM
• Number Of I /o: 48
• 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: 80-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Monitor ROM (MON)
Data Sheet
170
NOTE:
In monitor mode, the MCU uses different vectors for reset, SWI
(software interrupt), and break interrupt than those for user mode. The
alternate vectors are in the $FE page instead of the $FF page and allow
code execution from the internal monitor firmware instead of user code.
Exiting monitor mode after it has been initiated by having a blank reset
vector requires a power-on reset (POR). Pulling RST low will not exit
monitor mode in this situation.
Table 10-2
mode vectors.
Monitor
Modes
User
Figure 10-2. Low-Voltage Monitor Mode Entry Flowchart
summarizes the differences between user mode and monitor
Table 10-2. Mode Differences (Vectors)
Monitor ROM (MON)
Vector
$FFFE
$FEFE
Reset
High
MONITOR MODE
TRIGGERED?
POR RESET
IS VECTOR
EXECUTE
MONITOR
BLANK?
CODE
Vector
$FEFF
$FFFF
Reset
POR
Low
YES
YES
NO
$FEFC
Vector
$FFFC
NO
Break
High
Functions
MC68HC908LJ24/LK24 — Rev. 2.1
NORMAL USER
Vector
$FFFD
$FEFD
Break
Low
MODE
Freescale Semiconductor
Vector
$FFFC
$FEFC
High
SWI
Vector
$FFFD
$FEFD
Low
SWI