MM912F634DV1AER2 Freescale Semiconductor, MM912F634DV1AER2 Datasheet - Page 260
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MM912F634DV1AER2
Manufacturer Part Number
MM912F634DV1AER2
Description
16-bit Microcontrollers - MCU DUAL LS/HS SWITCH W. LIN
Manufacturer
Freescale Semiconductor
Datasheet
1.MM912G634DV1AE.pdf
(338 pages)
Specifications of MM912F634DV1AER2
Rohs
yes
Core
HCS12
Processor Series
MM912F634
Data Bus Width
16 bit
Maximum Clock Frequency
20 MHz
Program Memory Size
32 KB
Data Ram Size
2 KB
On-chip Adc
Yes
Operating Supply Voltage
4.5 V to 5.5 V
Operating Temperature Range
- 40 C to + 105 C
Package / Case
LQFP-48
Mounting Style
SMD/SMT
A/d Bit Size
10 bit
A/d Channels Available
15
Interface Type
SPI
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
6
Number Of Timers
1
Program Memory Type
Flash
Supply Voltage - Max
4.5 V
Supply Voltage - Min
4.5 V
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Functional Description and Application Information
Table 338. RTICTL Field Descriptions (continued)
4.34.6.2.2
This register is used to restart the RTI time-out period.
Table 339. RTICNT Register Diagram
Read: Anytime
Write: Anytime in appliance of the write protection rules (see
When the RTI is turned on the RTIF bit can be set with the following rates:
Freescale Semiconductor
0x003D
RTIRT[1:0]
Reset
RTIRSTP
RTISWAI
W
R
Field
RTIE
1–0
4
3
2
RTICNT7
RTI Stops in Wait Mode Bit
Normal modes: Write once
Special modes: Write anytime.
0 RTI keeps running in Wait mode.
1 RTI stops and initializes the RTI counter whenever the part enters Wait mode.
RTI Runs in Stop Mode Bit
Normal modes: Write once
Special modes: Write anytime.
0 RTI stops in Stop mode
1 RTI continues in Stop mode
Note: If the RTIRSTP bit is cleared the RTI counter will go static while in Stop mode. The RTI counter will not initialize like in
Real Time Interrupt Enable Bit
Write anytime.
0 Interrupt requests from RTI are disabled.
1 Interrupt will be requested whenever RTIF is set.
RTI Interrupt Prescaler Rate Select Bits — These bits select the prescaler rate for the RTI. See
Divide Rates“
Write anytime in appliance of the write protection rules (see
0
7
RTI Counter select bits (RTICNT)
Wait mode with RTISWAI bit set.
Table 340. RTI Frequency Divide Rates
for selectable ratios in conjunction with RTICNT[7:0] counter select bits
RTICNT6
1111 1110 (255)
0000 0000 (1)
0000 0001 (2)
0000 0010 (3)
0000 0011 (4)
RTICNT[7:0]
0
6
......
RTICNT5
5
0
OFF
(OFF)
OFF
OFF
OFF
OFF
00
....
(185)
RTICNT4
0
4
4.34.7.1, “RTI register write protection
255x1
OFF
Description
2x1
3x1
4x1
(1)
01
....
RTIRT[1:0] =
4.34.7.1, “RTI register write protection
RTICNT3
0
3
255x16
2x16
3x16
4x16
(16)
10
16
....
RTICNT2
255x256
0
2
2x256
3x256
4x256
(256)
256
Real Time Interrupt (S12SRTIV1)
11
....
rules“)
RTICNT1
Table 340., “RTI Frequency
rules“).
1
0
MM912F634
RTICNT0
0
0
260
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