MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 257
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MPC8313ECZQADDC
Manufacturer Part Number
MPC8313ECZQADDC
Description
Microprocessors - MPU 8313 REV2.2 PB ENC EXT
Manufacturer
Freescale Semiconductor
Datasheet
1.MPC8313CZQADDC.pdf
(1214 pages)
Specifications of MPC8313ECZQADDC
Processor Series
MPC8313E
Core
e300
Data Bus Width
16 bit
Maximum Clock Frequency
133 MHz
Program Memory Size
16 KB
Data Ram Size
16 KB
Interface Type
I2C
Mounting Style
SMD/SMT
Package / Case
PBGA
Number Of Programmable I/os
32
Number Of Timers
4
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5.6.6.2
The PIT unit can operate in the following modes:
5.6.7
The following initialization sequence of PIT is recommended:
See
5.7
The following sections describe theory of operation of the general purpose (global) timer module,
including a definition of the external signals and the functionality. Additionally, the configuration, control,
and status registers are described. Note that individual chapters in this book describe additional specific
initialization aspects for each individual block.
5.7.1
Each global timer module (GTM) includes four identical 16-bit general-purpose timers, two 32-bit timers
or one 64-bit timer. Each GTM timer consists of a timer prescale register (GTPSR), a timer mode register
(GTMDR) a timer capture register (GTCPR), a timer counter register (GTCNR), a timer reference register
Freescale Semiconductor
•
•
•
1. Write to PTPSR to set the PIT prescaler to the desired value
2. Write to PTLDR to initialize the PIT initial value
3. Write to PTCNR to configure and start the PIT operation: PIT input clock source, periodic interrupt
Section 5.5.7, “RTC Programming
PIT enable/disable mode:
The PTCNR[CLEN] bit enables the PIT timer. It should be set by software after a system reset to
enable the PIT timer.
— PIT disable mode (PTCNR[CLEN] = 0). When the PIT’s clock is disabled, counter maintains
— PIT enable mode (PTCNR[CLEN] = 1). When the counter’s clock is enabled, it continues
PIT periodic interrupt enable/disable mode:
— PIT periodic interrupt enable mode (PTCNR[PIM] = 1). After the PIT’s 32-bit counter reaches
— PIT periodic interrupt disable mode (PTCNR[PIM] = 0). After the PIT’s 32-bit counter reaches
PIT internal/external input clock mode:
The input clock to the PIT may be an internal system clock or the PIT clock.
— PIT use the internal input clock mode (PTCNR[CLIN] = 0)
— PIT use the PIT clock (PTCNR[CLIN] = 1)
mask, PIT clock enable.
General-Purpose Timers (GTMs)
its old value.
counting using the previous value.
zero, the PIT sets the PTEVR[PIF] flag and generates an interrupt.
zero, the PIT sets the PTEVR[PIF] flag but does not generate an interrupt.
PIT Programming Guidelines
GTM Overview
PIT Operational Modes
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Guidelines,” for real-time clock programming guidelines.
System Configuration
5-49
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