S908AC4MDRE FREESCALE [Freescale Semiconductor, Inc], S908AC4MDRE Datasheet - Page 222
![no-image](/images/no-image-200.jpg)
S908AC4MDRE
Manufacturer Part Number
S908AC4MDRE
Description
M68HC08 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.S908AC4MDRE.pdf
(274 pages)
- Current page: 222 of 274
- Download datasheet (4Mb)
Development Support
18.2.2 Break Module Registers
These registers control and monitor operation of the break module:
18.2.2.1 Break Status and Control Register
The break status and control register (BRKSCR) contains break module enable and status bits.
BRKE — Break Enable Bit
BRKA — Break Active Bit
18.2.2.2 Break Address Registers
The break address registers (BRKH and BRKL) contain the high and low bytes of the desired breakpoint
address. Reset clears the break address registers.
222
•
•
•
•
•
This read/write bit enables breaks on break address register matches. Clear BRKE by writing a 0 to
bit 7. Reset clears the BRKE bit.
This read/write status and control bit is set when a break address match occurs. Writing a 1 to BRKA
generates a break interrupt. Clear BRKA by writing a 0 to it before exiting the break routine. Reset
clears the BRKA bit.
1 = Breaks enabled on 16-bit address match
0 = Breaks disabled
1 = Break address match
0 = No break address match
Break status and control register (BRKSCR)
Break address register high (BRKH)
Break address register low (BRKL)
Break status register (BSR)
Break flag control register (BFCR)
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 5
Figure 18-3. Break Status and Control Register (BRKSCR)
BRKE
Bit 15
Bit 7
Bit 7
Bit 7
Bit 7
0
0
0
Figure 18-4. Break Address Register High (BRKH)
Figure 18-5. Break Address Register Low (BRKL)
= Unimplemented
BRKA
Bit 14
Bit 6
6
0
6
0
6
0
Bit 13
Bit 5
5
0
0
5
0
5
0
Bit 12
Bit 4
4
0
0
4
0
4
0
Bit 11
Bit 3
3
0
0
3
0
3
0
Bit 10
Bit 2
2
0
0
2
0
2
0
Bit 9
Bit 1
1
0
0
1
0
1
0
Freescale Semiconductor
Bit 0
Bit 0
Bit 8
Bit 0
Bit 0
0
0
0
0
Related parts for S908AC4MDRE
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![MA0186100](/images/manufacturer_photos/0/6/626/square_d_tmb.jpg)
Part Number:
Description:
S908 RIO COAX NET SPLITTER
Manufacturer:
SQUARE D
Datasheet:
![140CRA93100C](/images/manufacturer_photos/0/6/626/square_d_tmb.jpg)
Part Number:
Description:
S908 SINGLE CHANNEL DROP CC
Manufacturer:
SQUARE D
Datasheet:
![140CRA93200C](/images/manufacturer_photos/0/6/626/square_d_tmb.jpg)
Part Number:
Description:
S908 DUAL CHANNEL DROP CC
Manufacturer:
SQUARE D
Datasheet:
![140CRP93100C](/images/manufacturer_photos/0/6/626/square_d_tmb.jpg)
Part Number:
Description:
S908 SINGLE-CHAN HD CC
Manufacturer:
SQUARE D
Datasheet:
![140CRP93200C](/images/manufacturer_photos/0/6/626/square_d_tmb.jpg)
Part Number:
Description:
S908 DUAL-CHANNEL HEAD CC
Manufacturer:
SQUARE D
Datasheet:
![MA0185100](/images/manufacturer_photos/0/6/626/square_d_tmb.jpg)
Part Number:
Description:
S908 RIO COAX DROP TAP
Manufacturer:
SQUARE D
Datasheet:
![MC14560BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC12034AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MPIC2112P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC14520BCP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC12026AP](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC145152P2](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MC68HC11A0P](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
![MCM6726DWJ10](/images/manufacturer_photos/0/2/263/freescale_semiconductor__inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: