Datasheet
Table Of Contents
- List of Sections
- Table of Contents
- General Description
- Central Processing Unit (CPU)
- Pinout and Signal Description
- System Configuration
- Registers
- Operating Modes
- Resource Mapping
- Bus Control and Input/Output
- Resets and Interrupts
- Voltage Regulator (VREG)
- Flash EEPROM 256K
- EEPROM 4K
- Port Integration Module
- Clocks and Reset Generator (CRG)
- Pulse Width Modulator (PWM)
- Enhanced Capture Timer (ECT)
- Serial Communications Interface (SCI)
- Serial Peripheral Interface (SPI)
- Inter-IC Bus (IIC)
- MSCAN
- Analog to Digital Converter
- Byte Data Link Controller Module
- Contents
- Overview
- Features
- Block Diagram
- Register Map
- Functional Description
- Register Descriptions
- External Pin Descriptions
- Reset Initialization/Basic Operation
- Transmitting A Message
- Receiving A Message
- Transmitting An In-Frame Response (IFR)
- Receiving An In-Frame Response (IFR)
- Special BDLC Operations
- Modes of Operation
- Interrupt Operation
- Low Power Options
- Background Debug Module (BDM)
- Breakpoint (BKP) Module
- Revision History
- Glossary
- Literature Updates
Clocks and Reset Generator (CRG)
MC9S12DP256 — Revision 1.1
Clocks and Reset Generator (CRG)
Table 47 RTI Frequency Divide Rates
RTR[3:0] RTR[6:4] =
000
(OFF)
001
(2
10
)
010
(2
11
)
011
(2
12
)
100
(2
13
)
101
(2
14
)
110
(2
15
)
111
(2
16
)
0 (÷1) OFF* 2
10
2
11
2
12
2
13
2
14
2
15
2
16
1 (÷2) OFF 2x2
10
2x2
11
2x2
12
2x2
13
2x2
14
2x2
15
2x2
16
2 (÷3) OFF 3x2
10
3x2
11
3x2
12
3x2
13
3x2
14
3x2
15
3x2
16
3 (÷4) OFF 4x2
10
4x2
11
4x2
12
4x2
13
4x2
14
4x2
15
4x2
16
4 (÷5) OFF 5x2
10
5x2
11
5x2
12
5x2
13
5x2
14
5x2
15
5x2
16
5 (÷6) OFF 6x2
10
6x2
11
6x2
12
6x2
13
6x2
14
6x2
15
6x2
16
6 (÷7) OFF 7x2
10
7x2
11
7x2
12
7x2
13
7x2
14
7x2
15
7x2
16
7 (÷8) OFF 8x2
10
8x2
11
8x2
12
8x2
13
8x2
14
8x2
15
8x2
16
8 (÷9) OFF 9x2
10
9x2
11
9x2
12
9x2
13
9x2
14
9x2
15
9x2
16
9 (÷10) OFF 10x2
10
10x2
11
10x2
12
10x2
13
10x2
14
10x2
15
10x2
16
10 (÷11) OFF 11x2
10
11x2
11
11x2
12
11x2
13
11x2
14
11x2
15
11x2
16
11 (÷12) OFF 12x2
10
12x2
11
12x2
12
12x2
13
12x2
14
12x2
15
12x2
16
12 (÷13) OFF 13x2
10
13x2
11
13x2
12
13x2
13
13x2
14
13x2
15
13x2
16
13 (÷14) OFF 14x2
10
14x2
11
14x2
12
14x2
13
14x2
14
14x2
15
14x2
16
14 (÷15) OFF 15x2
10
15x2
11
15x2
12
15x2
13
15x2
14
15x2
15
15x2
16
15 (÷16) OFF 16x2
10
16x2
11
16x2
12
16x2
13
16x2
14
16x2
15
16x2
16
* Denotes default value out of reset.
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
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