MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 248
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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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System Configuration
5.5.5.3
The real time counter prescale register (RTPSR), shown in
configure the RTC prescaler’s value.
Table 5-42
5.5.5.4
The real time counter register (RTCTR), shown in
current value in the RTC counter.
The CNTV value is not affected by reads or writes to RTCTR.
Table 5-43
5-40
Offset 0x08
Offset 0x0C
Reset
Reset
0–31
0–31
Bits
Bits
W
W
R
R
0
0
Name
PRSC RTC prescaler bits. Select the input clock divider for the RTC counter clock. The prescaler is programmed to
Name
CNTV RTC counter value field. RTCTR[CNTV] contains the current value of the time counter. This is a read-only
defines the bit fields of RTPSR.
defines the bit fields of RTCTR.
Real Time Counter Prescale Register (RTPSR)
Real Time Counter Register (RTCTR)
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
divide the RTC clock input by values from 1 to 4,294,967,296. The value 0x0000 divides the clock by 1 and
0xFFFF_FFFF divides the clock by 4,294,967,296.
To accurately predict the timing of the next count, change the RTPSR[PRSC] field only when the enable bit
RTCNR[CLE] is clear. Changing the RTPSR[PRSC] bits resets the prescaler counter. System reset and the
loading of a new value into the counter both reset the prescaler counter. Clearing RTCNR[CLE] stops the
prescaler counter.
field. Writes have no effect on RTCTR[CNTV].
Figure 5-27. Real Time Counter Prescale Register (RTPSR)
Figure 5-28. Real Time Counter Register (RTCTR)
Table 5-42. RTPSR Bit Settings
Table 5-43. RTCTR Bit Settings
Figure
All zeros
All zeros
PRSC
CNTV
Description
Description
5-28, is a read-only register that shows the
Figure
5-27, is a read/write register used to
Freescale Semiconductor
Access: Read/Write
Access: Read only
31
31
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