MC908AP32CFAER Freescale Semiconductor, MC908AP32CFAER Datasheet - Page 112
MC908AP32CFAER
Manufacturer Part Number
MC908AP32CFAER
Description
IC MCU 32K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908AP8CFBE.pdf
(324 pages)
Specifications of MC908AP32CFAER
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SCI, SPI
Peripherals
LED, LVD, POR, PWM
Number Of I /o
32
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908AP32CFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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System Integration Module (SIM)
7.7.1 SIM Break Status Register
The SIM break status register (SBSR) contains a flag to indicate that a break caused an exit from stop
mode or wait mode.
SBSW — Break Wait Bit
SBSW 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.
112
This code works if the H register has been pushed onto the stack in the break
service routine software. This code should be executed at the end of the break
service routine software.
HIBYTE
LOBYTE
DOLO
RETURN
This status bit is set when a break interrupt causes an exit from wait mode or stop mode. Clear SBSW
by writing a logic 0 to it. Reset clears SBSW.
1 = Stop mode or wait mode was exited by break interrupt
0 = Stop mode or wait mode was not exited by break interrupt
Note: Writing a logic 0 clears SBSW.
EQU
EQU
If not SBSW, do RTI
BRCLR
TST
BNE
DEC
DEC
PULH
RTI
Address:
Reset:
Read:
Write:
$FE00
5
6
SBSW,SBSR, RETURN
LOBYTE,SP
DOLO
HIBYTE,SP
LOBYTE,SP
Bit 7
R
Figure 7-20. SIM Break Status Register (SBSR)
R
6
MC68HC908AP Family Data Sheet, Rev. 4
R
R
5
;
;
;If RETURNLO is not zero,
;then just decrement low byte.
;Else deal with high byte, too.
;Point to WAIT/STOP opcode.
;Restore H register.
= Reserved
See if wait mode or stop mode was exited by
break.
R
4
R
3
R
2
SBSW
Note
1
0
Freescale Semiconductor
Bit 0
R
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