mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 83

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
PEE — Port E Enable
STOP_IRCDIS — Internal RC Oscillator Stop Mode Disable
STOP_XCLKEN — Crystal Oscillator Stop Mode Enable
DIV2CLK — Divide-by-2 Clock Bypass
Setting PEE configures the PTE0/FP11–PTE7/FP18 pins for LCD
frontplane driver use. Reset clears this bit.
Setting STOP_IRCDIS disables the internal RC oscillator during stop
mode. When this bit is cleared, the internal RC oscillator continues to
operate in stop mode. Reset clears this bit.
Setting STOP_XCLKEN enables the external crystal (XTAL) oscillator
to continue operating in stop mode. This is useful for driving the real
time clock module to allow it to generate periodic wake up while in
stop mode. When this bit is cleared, the external XTAL oscillator will
be disabled during stop mode. Reset clears this bit.
When CGMXCLK is selected to drive the system clocks (BCS=0),
setting DIV2CLK allows the CGMXCLK to bypass the divide-by-2
divider in the CGM module; CGMOUT will equal CGMXCLK and bus
clock will equal CGMXCLK divide-by-2.
DIV2CLK bit has no effect when the BCS=1 in the PLL control
register (CGMVCLK selected and divide-by-2 always enabled). Reset
clears this bit.
1 = PTE0/FP11–PTE7/FP18 pins configured as LCD frontplane
0 = PTE0/FP11–PTE7/FP18 pins configured as standard I/O pins:
1 = Internal RC oscillator disabled during stop mode
0 = Internal RC oscillator enabled during stop mode
1 = XTAL oscillator enabled during stop mode
0 = XTAL oscillator disabled during stop mode
1 = Divide-by-2 divider bypassed;
0 = Divide-by-2 divider enabled;
Configuration Registers (CONFIG)
driver pins: FP11–FP18
PTE0–PTE7
When BSC=0, CGMOUT equals CGMXCLK
When BSC=0, CGMOUT equals CGMXCLK divide-by-2
Configuration Register 2 (CONFIG2)
Configuration Registers (CONFIG)
Data Sheet
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