参数资料
型号: MC68HC05SB7
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: MO-150, SSOP-28
文件页数: 166/170页
文件大小: 2161K
代理商: MC68HC05SB7
August 27, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05SB7
CURRENT SENSE AMPLIFIER
MOTOROLA
REV 2.1
13-3
CSEN — Current Sense Amplier Enable
This read/write bit enables the CSA module. Reset clears the CSEN bit.
1 =
CSA block enabled.
0 =
CSA block disabled.
X30, X10 — Current Sense Amplier Gain Select
These read/write bits enable the respective gain to be selected. See
Table 13-2. Reset clears the X30 and X10 bits.
Table 13-2. Current Sense Amplier Gain Select
CSCAL — Current Sense Amplier Calibration Enable
This read/write bit enables the CSA calibration. Reset clears the CSCAL bit.
1 =
CSA calibration enabled; current amplier input connected to
ground (VSS).
0 =
CSA calibration disabled; current amplier input from CSA pin.
CDEN — Current Detect Enable
This read/write bit enables the current detect comparator and current detect
output pin (CS0 or CS1) logic. Reset clears the CDEN bit.
1 =
Current detect comparator enabled.
0 =
Current detect comparator disabled.
CDIE — Current Detect Interrupt Enable
This read/write bit enables interrupts caused by detecting the current passing
through the sensing resistor, RSENSE. Reset clears the CDIE bit.
1 =
Current detect interrupt enabled.
0 =
Current detect interrupt disabled.
CDIFR — Current Detect Interrupt Flag Reset
Writing a logic “1” to this write-only bit clears the CDIF bit. CDIFR always reads
as a logic zero. Reset does not affect CDIFR.
1 =
Clear CDIF bit.
0 =
No affect on CDIF bit.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
CSSCR
R
CSEN
X30
X10
CSCAL
CDEN
CDIE
0
CDIF
$000A
W
CDIFR
reset:
00000000
Figure 13-2. CSA Status and Control Register (CSSCR)
X30
X10
GAIN SELECTED
0
Don’t care
X10
1
0
X30
1
Undetermined
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