S912XET256J2VAGR Freescale Semiconductor, S912XET256J2VAGR Datasheet - Page 497

• Manufacturer Part Number: S912XET256J2VAGR
• Description: 16-bit Microcontrollers - MCU Watchdog OSC/Timer -40 C to + 105 C HCS12X MCU SPI
• Manufacturer: Freescale Semiconductor

Specifications of S912XET256J2VAGR

• Core: HCS12X
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 16 KB
• On-chip Adc: Yes
• Package / Case: LQFP
• Mounting Style: SMD/SMT
• A/d Bit Size: 12 bit
• A/d Channels Available: 24
• Interface Type: CAN, SCI, SPI
• Maximum Operating Temperature: + 105 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

S12XECRG 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 11-22
and when the RESET pin is held low.
11.6
The interrupts/reset vectors requested by the S12XECRG are listed in
specification for related vector addresses and priorities.
Freescale Semiconductor
Interrupts
and
Figure 11-23
Internal RESET
RESET
Internal POR
RESET
Internal POR
Internal RESET
Figure 11-22. RESET Pin Tied to V
Interrupt Source
Real time interrupt
LOCK interrupt
SCM interrupt
Figure 11-23. RESET Pin Held Low Externally
show the power-up sequence for cases when the RESET pin is tied to V
MC9S12XE-Family Reference Manual Rev. 1.25
Table 11-18. S12XECRG Interrupt Vectors
Mask
Clock Quality Check
(no Self-Clock Mode)
Clock Quality Check
(no Self Clock Mode)
CCR
I bit
I bit
I bit
128 SYSCLK
) (
) (
) (
128 SYSCLK
) (
) (
) (
Chapter 11 S12XE Clocks and Reset Generator (S12XECRGV1)
64 SYSCLK
DD
64 SYSCLK
(by a Pull-up Resistor)
CRGINT (LOCKIE)
CRGINT (SCMIE)
CRGINT (RTIE)
Local Enable
Table
11-18. Refer to MCU
DD
497