MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 154
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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Timebase Module (TBM)
10.5 Interrupts
The timebase module can interrupt the CPU on a regular basis with a rate defined by TBR[2:0]. When the
timebase counter chain rolls over, the TBIF flag is set. If the TBIE bit is set, enabling the timebase
interrupt, the counter chain overflow will generate a CPU interrupt request. The interrupt vector is defined
in
Table 2-1 . Vector
Addresses.
Interrupts must be acknowledged by writing a logic 1 to the TACK bit.
10.6 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power- consumption standby modes.
10.6.1 Wait Mode
The timebase module remains active after execution of the WAIT instruction. In wait mode, the timebase
register is not accessible by the CPU.
If the timebase functions are not required during wait mode, reduce the power consumption by stopping
the timebase before enabling the WAIT instruction.
10.6.2 Stop Mode
The timebase module may remain active after execution of the STOP instruction if the oscillator has been
enabled to operate during stop mode through the stop mode oscillator enable bit (STOP_ICLKDIS,
STOP_RCLKEN, or STOP_XCLKEN) for the selected oscillator in the CONFIG2 register. The timebase
module can be used in this mode to generate a periodic walk-up from stop mode.
If the oscillator has not been enabled to operate in stop mode, the timebase module will not be active
during stop mode. In stop mode the timebase register is not accessible by the CPU.
If the timebase functions are not required during stop mode, reduce the power consumption by stopping
the timebase before enabling the STOP instruction.
MC68HC908AP Family Data Sheet, Rev. 4
154
Freescale Semiconductor
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