参数资料
型号: MC68HC711EA9CP2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP56
封装: PLASTIC, SDIP-56
文件页数: 52/58页
文件大小: 583K
代理商: MC68HC711EA9CP2
MOTOROLA
MC68HC11EA9
56
MC68HC11EA9TS/D
CCF — Conversions Complete Flag
Set after an A/D conversion cycle is completed. CCF is cleared by a write to ADCTL.
0 = The A/D converter is currently performing a conversion sequence
1 = The A/D converter has completed a conversion, placed the result in the appropriate result reg-
ister and is currently idle
Bit 6 — Not implemented
Always reads zero
SCAN — Continuous Scan Control
0 = Do four conversions and stop
1 = Convert four channels in selected group continuously
MULT — Multiple Channel/Single Channel Control
0 = Convert single channel selected
1 = Convert four channels in selected group
CD–CA — Channel Select D through A
ADCTL — A/D Control/Status
$1030
BIT 7
654321
BIT 0
CCF
SCAN
MULT
CD
CC
CB
CA
RESET:
I
0
IIIIII
Table 23 A/D Converter Channel Select Control Bits
Channel Select Control Bits
Channel
Result in ADRx if
CD
CC
CB
CA
Signal
MULT = 1
0000
AN0
ADR1
0001
AN1
ADR2
0010
AN2
ADR3
0011
AN3
ADR4
0100
AN4
ADR1
0101
AN5
ADR2
0110
AN6
ADR3
0111
AN7
ADR4
1000
Reserved
1001
Reserved
1010
Reserved
1011
Reserved
1100
VRH*
ADR1
1101
VRL*
ADR2
1110
(VRH)/2*
ADR3
1111
Reserved
ADR4
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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