MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 283
MC908AP32CFBE
Manufacturer Part Number
MC908AP32CFBE
Description
Manufacturer
Freescale
Datasheet
1.MC908AP32CFBE.pdf
(324 pages)
Specifications of MC908AP32CFBE
Cpu Family
HC08
Device Core Size
8b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Total Internal Ram Size
2KB
# I/os (max)
32
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PQFP
Program Memory Type
Flash
Program Memory Size
32KB
Lead Free Status / RoHS Status
Compliant
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Low-Power Modes
18.6 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power-consumption standby modes.
18.6.1 Wait Mode
The keyboard interrupt module remains active in wait mode. Clearing the IMASKK bit in the keyboard
status and control register enables keyboard interrupt requests to bring the MCU out of wait mode.
18.6.2 Stop Mode
The keyboard interrupt module remains active in stop mode. Clearing the IMASKK bit in the keyboard
status and control register enables keyboard interrupt requests to bring the MCU out of stop mode.
18.7 Keyboard Module During Break Interrupts
The system integration module (SIM) controls whether the keyboard interrupt latch can be cleared during
the break state. The BCFE bit in the SIM break flag control register (BFCR) enables software to clear
status bits during the break state.
To allow software to clear the keyboard interrupt latch during a break interrupt, write a logic 1 to the BCFE
bit. If a latch is cleared during the break state, it remains cleared when the MCU exits the break state.
To protect the latch during the break state, write a logic 0 to the BCFE bit. With BCFE at logic 0 (its default
state), writing to the keyboard acknowledge bit (ACKK) in the keyboard status and control register during
the break state has no effect.
MC68HC908AP Family Data Sheet, Rev. 4
Freescale Semiconductor
281
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