MC68HC908LJ24CPB Freescale Semiconductor, MC68HC908LJ24CPB Datasheet - Page 170
MC68HC908LJ24CPB
Manufacturer Part Number
MC68HC908LJ24CPB
Description
IC MCU 24K FLASH 8MHZ SPI 64LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908LK24CFUE.pdf
(464 pages)
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
-
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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
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