MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 225
MC68HC908AB32
Manufacturer Part Number
MC68HC908AB32
Description
HCMOS Microcontroller Unit
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AB32.pdf
(392 pages)
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13.7 I/O Registers
13.7.1 PIT Status and Control Register
MC68HC908AB32
MOTOROLA
—
Rev. 1.0
Address:
bits. Some status bits have a two-step read/write clearing procedure. If
software does the first step on such a bit before the break, the bit cannot
change during the break state as long as BCFE is at logic zero. After the
break, doing the second step clears the status bit.
The following I/O registers control and monitor operation of the PIT:
The PIT status and control register does the following:
Reset:
Read:
Write:
•
•
•
•
•
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
PIT status and control register (PSC)
PIT counter registers (PCNTH:PCNTL)
PIT counter modulo registers (PMODH:PMODL)
Enables PIT interrupt
Flags PIT overflows
Stops the PIT counter
Resets the PIT counter
Prescales the PIT counter clock
Figure 13-3. PIT Status and Control Register (PSC)
$004B
POF
Bit 7
Programmable Interrupt Timer (PIT)
0
0
Go to: www.freescale.com
= Unimplemented
POIE
0
6
PSTOP
1
5
PRST
0
4
0
Programmable Interrupt Timer (PIT)
0
3
0
PPS2
2
0
PPS1
0
1
Technical Data
I/O Registers
PPS0
Bit 0
0
225
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