S912XET256J2VAGR Freescale Semiconductor, S912XET256J2VAGR Datasheet - Page 480

• 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

Chapter 11 S12XE Clocks and Reset Generator (S12XECRGV1)
11.3.2.8
This register selects the timeout period for the Real Time Interrupt.
Read: Anytime
Write: Anytime
480
Module Base + 0x0007
RTR[6:4]
RTR[3:0]
RTDEC
Reset
Field
6–4
3–0
0000 (÷1)
RTR[3:0]
7
W
R
RTDEC
Decimal or Binary Divider Select Bit — RTDEC selects decimal or binary based prescaler values.
0 Binary based divider value. See
1 Decimal based divider value. See
Real Time Interrupt Prescale Rate Select Bits — These bits select the prescale rate for the RTI. See
10
Real Time Interrupt Modulus Counter Select Bits — These bits select the modulus counter target value to
provide additional
RTICTL register. The source clock for the RTI is OSCCLK.
S12XECRG RTI Control Register (RTICTL)
0
7
A write to this register initializes the RTI counter.
and
Table
OFF
(OFF)
000
11-11.
RTR6
(1)
Figure 11-10. S12XECRG RTI Control Register (RTICTL)
Table 11-10. RTI Frequency Divide Rates for RTDEC = 0
0
6
granularity.Table 11-10
MC9S12XE-Family Reference Manual Rev. 1.25
(2
001
2
Table 11-9. RTICTL Field Descriptions
10
10
Table 11-8. FM Amplitude selection
)
RTR5
FM1
0
5
0
0
1
1
Table 11-10
Table 11-11
(2
010
2
11
11
0
1
0
1
)
and
RTR4
NOTE
FM0
0
4
Table 11-11
Description
(2
011
2
12
12
RTR[6:4] =
)
FM Amplitude /
FM off
±1%
±2%
±4%
f
VCO
RTR3
show all possible divide values selectable by the
0
3
Variation
(2
100
2
13
13
)
RTR2
0
2
(2
101
2
14
14
)
Freescale Semiconductor
RTR1
0
1
(2
110
2
15
15
)
RTR0
Table 11-
(2
111
2
0
0
16
16
)