MC9S12E128CPV Freescale Semiconductor, MC9S12E128CPV Datasheet - Page 187
MC9S12E128CPV
Manufacturer Part Number
MC9S12E128CPV
Description
Microcontrollers (MCU) 16 Bit 16MHz
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12E128CPV.pdf
(606 pages)
Specifications of MC9S12E128CPV
Data Bus Width
16 bit
Program Memory Type
Flash
Program Memory Size
128 KB
Data Ram Size
8 KB
Interface Type
SCI, SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
92
Number Of Timers
16 bit
Operating Supply Voltage
3.135 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
LQFP-112
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
On-chip Dac
8 bit, 2 Channel
Lead Free Status / Rohs Status
No RoHS Version Available
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4.4.6
The RTI can be used to generate a hardware interrupt at a fixed periodic rate. If enabled (by setting
RTIE=1), this interrupt will occur at the rate selected by the RTICTL register. The RTI runs with a gated
OSCCLK (see
RTIF flag is set to 1 and a new RTI time-out period starts immediately.
A write to the RTICTL register restarts the RTI time-out period.
If the PRE bit is set, the RTI will continue to run in pseudo-stop mode.
4.4.7
4.4.7.1
The CRGV4 block behaves as described within this specification in all normal modes.
4.4.7.2
The VCO has a minimum operating frequency, f
to a failure or due to long crystal start-up time, the bus clock and the core clock are derived from the VCO
Freescale Semiconductor
Real-Time Interrupt (RTI)
Modes of Operation
Normal Mode
Self-Clock Mode
Section Figure 4-22., “Clock Chain for
gating condition
OSCCLK
= Clock Gate
STOP(PSTP,PRE),
WAIT(RTIWAI),
RTI enable
Figure 4-22. Clock Chain for RTI
MC9S12E128 Data Sheet, Rev. 1.07
2
2
2
2
2
2
SCM
1024
.
. If the external clock frequency is not available due
RTR[6:4]
0:1:0
0:0:1
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
0:0:0
RTI”). At the end of the RTI time-out period the
COUNTER (RTR[3:0])
4-BIT MODULUS
Chapter 4 Clocks and Reset Generator (CRGV4)
RTI TIMEOUT
187
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