S912XET256J2VAGR Freescale Semiconductor, S912XET256J2VAGR Datasheet - Page 813

• 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

22.4.6
Setting the PAMOD bit configures the pulse accumulator for gated time accumulation operation. An active
level on the PACNT input pin enables a divided-by-64 clock to drive the pulse accumulator. The PEDGE
bit selects low levels or high levels to enable the divided-by-64 clock.
The trailing edge of the active level at the IOC7 pin sets the PAIF. The PAI bit enables the PAIF flag to
generate interrupt requests.
The pulse accumulator counter register reflect the number of pulses from the divided-by-64 clock since the
last reset.
22.5
The reset state of each individual bit is listed within
which details the registers and their bit fields.
22.6
This section describes interrupts originated by the TIM16B8CV2 block.
generated by the TIM16B8CV2 to communicate with the MCU.
The TIM16B8CV2 uses a total of 11 interrupt vectors. The interrupt vector offsets and interrupt numbers
are chip dependent.
Freescale Semiconductor
1. Chip Dependent.
Interrupt
C[7:0]F
PAOVF
PAOVI
TOF
Resets
Interrupts
Gated Time Accumulation Mode
The pulse accumulator counter can operate in event counter mode even
when the timer enable bit, TEN, is clear.
The timer prescaler generates the divided-by-64 clock. If the timer is not
active, there is no divided-by-64 clock.
Offset
(1)
—
—
—
—
Vector
—
—
—
—
1
MC9S12XE-Family Reference Manual Rev. 1.25
Table 22-25. TIM16B8CV1 Interrupts
Priority
—
—
—
—
1
Timer Channel 7–0
Pulse Accumulator
Pulse Accumulator
Timer Overflow
NOTE
NOTE
Section 22.3, “Memory Map and Register Definition”
Overflow
Source
Input
Chapter 22 Timer Module (TIM16B8CV2) Block Description
Active high pulse accumulator input interrupt
Active high timer channel interrupts 7–0
Pulse accumulator overflow interrupt
Table 22-25
Timer Overflow interrupt
Description
lists the interrupts
813