S912XEQ512J3CAGR Freescale Semiconductor, S912XEQ512J3CAGR Datasheet - Page 492
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S912XEQ512J3CAGR
Manufacturer Part Number
S912XEQ512J3CAGR
Description
16-bit Microcontrollers - MCU 16 BIT,512K FLASH
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEQ512J3CAGR.pdf
(1324 pages)
Specifications of S912XEQ512J3CAGR
Rohs
yes
Core
HCS12X
Data Bus Width
16 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
512 kB
Data Ram Size
32 kB
On-chip Adc
Yes
Package / Case
LQFP
Mounting Style
SMD/SMT
Interface Type
CAN/SCI/SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
119
Number Of Timers
25
Program Memory Type
Flash
Supply Voltage - Max
1.98 V, 2.9 V, 5.5 V
Supply Voltage - Min
1.72 V, 2.7 V, 3.13 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S912XEQ512J3CAGR
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 11 S12XE Clocks and Reset Generator (S12XECRGV1)
11.4.3
This section summarizes the low power options available in the S12XECRG.
11.4.3.1
This is the default mode after reset.
The RTI can be stopped by setting the associated rate select bits to zero.
The COP can be stopped by setting the associated rate select bits to zero.
11.4.3.2
The WAI instruction puts the MCU in a low power consumption stand-by mode depending on setting of
the individual bits in the CLKSEL register. All individual Wait Mode configuration bits can be superposed.
This provides enhanced granularity in reducing the level of power consumption during Wait Mode.
Table 11-15
After executing the WAI instruction the core requests the S12XECRG to switch MCU into Wait Mode.
The S12XECRG then checks whether the PLLWAI bit is asserted. Depending on the configuration the
S12XECRG switches the system and core clocks to OSCCLK by clearing the PLLSEL bit and disables
the IPLL.
There are two ways to restart the MCU from Wait Mode:
492
1. Any reset
2. Any interrupt
Low Power Options
lists the individual configuration bits and the parts of the MCU that are affected in Wait Mode.
Run Mode
Wait Mode
In order to detect a potential clock loss the CME bit should always be
enabled (CME = 1).
If CME bit is disabled and the MCU is configured to run on PLLCLK, a loss
of external clock (OSCCLK) will not be detected and will cause the system
clock to drift towards lower frequencies. As soon as the external clock is
available again the system clock ramps up to its IPLL target frequency. If
the MCU is running on external clock any loss of clock will cause the
system to go static.
Table 11-15. MCU Configuration During Wait Mode
IPLL
COP
RTI
MC9S12XE-Family Reference Manual Rev. 1.25
Stopped
PLLWAI
—
—
NOTE
Stopped
RTIWAI
—
—
COPWAI
Stopped
—
—
Freescale Semiconductor
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