MC68HC908GR8CP Freescale Semiconductor, MC68HC908GR8CP Datasheet - Page 97

• Manufacturer Part Number: MC68HC908GR8CP
• Description: IC MCU FLASH 8BIT 8MHZ 4K 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908GR8CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 17
• Program Memory Size: 7.5KB (7.5K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x8b
• 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: -

MC68HC908GR8 — Rev 4.0
MOTOROLA
;
HIBYTE
LOBYTE
DOLO
RETURN
BW — Break Wait Bit
BW can be read within the break interrupt routine. The user can modify
the return address on the stack by subtracting 1 from it. The following
code is an example.
This code works if the H register was stacked in the break interrupt
routine. Execute this code at the end of the break interrupt routine.
Freescale Semiconductor, Inc.
This read/write bit is set when a break interrupt causes an exit from
wait mode. Clear BW by writing a logic 0 to it. Reset clears BW.
For More Information On This Product,
1 = Break interrupt during wait mode
0 = No break interrupt during wait mode
EQU
EQU
If not BW, do RTI
BRCLR
TST
BNE
DEC
DEC
PULH
RTI
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Break Module (BRK)
5
6
BW,BSR, RETURN
LOBYTE,SP
DOLO
HIBYTE,SP
LOBYTE,SP
;
;
; If RETURNLO is not 0,
; then just decrement low byte.
; Else deal with high byte also.
; Point to WAIT/STOP opcode.
; Restore H register.
See if wait mode or stop mode
was exited by break.
Break Module Registers
Break Module (BRK)
Technical Data
97