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参数资料
型号： MC68HC912BL16FU8
厂商： FREESCALE SEMICONDUCTOR INC
元件分类： 微控制器/微处理器
英文描述： 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP64
封装： QFP-64
文件页数： 29/128页
文件大小： 3326K
代理商： MC68HC912BL16FU8
MC68HC912BL16
124
MC68HC912BL16TS/D
Read and write anytime.
This register is used to control the breakpoint logic.
BKEN1, BKEN0 — Breakpoint Mode Enable
BKPM — Break on Program Addresses
This bit controls whether the breakpoint will cause an immediate data breakpoint (next instruction
boundary) or a delayed program breakpoint related to an executable opcode. Data and unexecuted op-
codes cannot cause a break if this bit is set. This bit has no meaning in SWI dual address mode. The
SWI mode only performs program breakpoints.
0 = On match, break at the next instruction boundary
1 = On match, break if the match is an instruction that will be executed. This uses tagging as its
breakpoint mechanism.
BK1ALE — Breakpoint 1 Range Control
Only valid in dual address mode.
0 = BRKDL will not be used to compare to the address bus.
1 = BRKDL will be used to compare to the address bus.
BK0ALE — Breakpoint 0 Range Control
Valid in all modes.
0 = BRKAL will not be used to compare to the address bus.
1 = BRKAL will be used to compare to the address bus.
This register is read/write in all modes.
BRKCT0 — Breakpoint Control Register 0
$0020
Bit 7
6
5
4
3
2
1
Bit 0
BKEN1
BKEN0
BKPM
0
BK1ALE
BK0ALE
0
RESET:
0
Table 43 Breakpoint Mode Control
BKEN1 BKEN0
Mode Selected
BRKAH/L Usage
BRKDH/L Usage
R/W
Range
0
Breakpoints Off
—
0
1
SWI — Dual Address Mode
Address Match
No
Yes
1
0
BDM — Full Breakpoint Mode
Address Match
Data Match
Yes
1
BDM — Dual Address Mode
Address Match
Yes
Table 44 Breakpoint Address Range Control
BK1ALE
BK0ALE
Address Range Selected
–
0
Upper 8-bit address only for full mode or dual mode BKP0
–
1
Full 16-bit address for full mode or dual mode BKP0
0
–
Upper 8-bit address only for dual mode BKP1
1
–
Full 16-bit address for dual mode BKP1
BRKCT1 — Breakpoint Control Register 1
$0021
Bit 7
6
5
4
3
2
1
Bit 0
0
BKDBE
BKMBH
BKMBL
BK1RWE
BK1RW
BK0RWE
BK0RW
RESET:
0
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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