參數(shù)資料
型號: MC68HC05SB7
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: MO-150, SSOP-28
文件頁數(shù): 26/170頁
文件大?。?/td> 2161K
代理商: MC68HC05SB7
August 27, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05SB7
ANALOG SUBSYSTEM
MOTOROLA
REV 2.1
15-23
Figure 15-8. A/D Conversion - Full Manual Control (Mode 0)
Point
Action
Software/Hardware Action
Dependent Variable(s)
0
Begin initial Discharge and select
Mode 0 by clearing the CHG, ATD2
and ATD1 control bits in the ACR.
Software write.
Software.
1VCAP falls to VSS.
Wait out minimum tDIS time.
VMAX, IDIS, CX.
2
Stop Discharge and begin Charge
by setting CHG control bit in ACR.
Software write.
Software.
3
VCAP rises to VX and comparator
output trips, setting CPF.
Wait out tCHG time.
VX, ICHG, CX.
4VCAP Reaches VMAX.
Wait out tCHG time.
VMAX, ICHG, CX.
5
Begin next Discharge by clearing
the CHG control bit in the ACR.
Software write.
Software.
tDIS
(MIN)
tCHG X ICHG
CX
tCHG
tDIS
VX =
tMAX
VMAX
CHG
COMP
0
TOF
OCF
ICF
(MIN)
VCAP
tDIS
VX
1
2
3
4
1
5
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