MC9S12E128CPV Freescale Semiconductor, MC9S12E128CPV Datasheet - Page 199
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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writes (0x0055 or 0x00AA) to the ARMCOP register must occur in the last 25% of the selected time-out
period. A premature write the CRG will immediately generate a reset.
As soon as the reset sequence is completed the reset generator checks the reset condition. If no clock
monitor failure is indicated and the latched state of the COP timeout is true, processing begins by fetching
the COP vector.
4.5.3
The on-chip voltage regulator detects when V
power-on reset or low voltage reset or both. As soon as a power-on reset or low voltage reset is triggered
the CRG performs a quality check on the incoming clock signal. As soon as clock quality check indicates
a valid oscillator clock signal the reset sequence starts using the oscillator clock. If after 50 check windows
the clock quality check indicated a non-valid oscillator clock the reset sequence starts using self-clock
mode.
Figure 4-26
and when the RESET pin is held low.
Freescale Semiconductor
Power-On Reset, Low Voltage Reset
and
Figure 4-27
Internal RESET
RESET
Internal POR
Internal RESET
RESET
Internal POR
Figure 4-26. RESET Pin Tied to V
show the power-up sequence for cases when the RESET pin is tied to V
Figure 4-27. RESET Pin Held Low Externally
MC9S12E128 Data Sheet, Rev. 1.07
DD
Clock Quality Check
(no Self-Clock Mode)
Clock Quality Check
(no Self-Clock Mode)
128 SYSCLK
) (
to the MCU has reached a certain level and asserts
) (
128 SYSCLK
) (
) (
) (
) (
64 SYSCLK
DD
64 SYSCLK
(by a Pull-Up Resistor)
Chapter 4 Clocks and Reset Generator (CRGV4)
DD
199
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