S912XET256J2VAGR Freescale Semiconductor, S912XET256J2VAGR Datasheet - Page 809

• 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

The Prescaler can be calculated as follows depending on logical value of the PTPS[7:0] and PRNT bit:
PRNT = 1 : Prescaler = PTPS[7:0] + 1
22.4
This section provides a complete functional description of the timer TIM16B8CV2 block. Please refer to
the detailed timer block diagram in
Freescale Semiconductor
PTPS[7:0]
PTPS7
Field
7:0
0
0
0
0
0
0
0
0
0
0
0
0
1
Functional Description
Precision Timer Prescaler Select Bits — These eight bits specify the division rate of the main Timer prescaler.
These are effective only when the PRNT bit of TSCR1 is set to 1.
in this case.
The newly selected prescale factor will not take effect until the next synchronized edge where all prescale counter
stages equal zero.
PTPS6
Table 22-24. Precision Timer Prescaler Selection Examples when PRNT = 1
0
0
0
0
0
0
0
0
0
0
0
1
1
PTPS5
0
0
0
0
0
0
0
0
0
0
1
1
1
MC9S12XE-Family Reference Manual Rev. 1.25
Table 22-23. PTPSR Field Descriptions
Figure 22-30
PTPS4
0
0
0
0
0
0
0
0
0
1
1
1
1
PTPS3
as necessary.
0
0
0
0
0
0
0
0
1
1
1
1
1
Description
Chapter 22 Timer Module (TIM16B8CV2) Block Description
PTPS2
0
0
0
0
1
1
1
1
1
1
1
1
1
Table 22-24
PTPS1
0
0
1
1
0
0
1
1
1
1
1
1
1
shows some selection examples
PTPS0
0
1
0
1
0
1
0
1
1
1
1
1
1
Prescale
Factor
128
256
16
32
64
1
2
3
4
5
6
7
8
809