參數(shù)資料
型號: MC68334GCEH16
廠商: Freescale Semiconductor
文件頁數(shù): 63/76頁
文件大小: 0K
描述: IC MCU 16MHZ 2K RAM 132-PQFP
標(biāo)準(zhǔn)包裝: 36
系列: M683xx
核心處理器: CPU32
芯體尺寸: 32-位
速度: 16MHz
連通性: EBI/EMI,UART/USART
輸入/輸出數(shù): 47
程序存儲器類型: ROMless
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8/10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 132-BQFP 緩沖式
包裝: 托盤
MC68334
66
MC68334TS/D REV. 1
6.4 ADC Registers
The ADCMCR is used to initialize the ADC.
STOP — STOP Mode
0 = Normal operation
1 = Low-power operation
STOP places the ADC in low-power state by disabling the ADC clock and powering down the analog
circuitry. Setting STOP aborts any conversion in progress. STOP is set to logic level one at reset, and
may be cleared to logic level zero by the CPU.
Clearing STOP enables normal ADC operation. However, because analog circuitry bias current has
been turned off, there is a period of recovery before output stabilization.
FRZ[1:0] — Freeze 1
The FRZ field is used to determine ADC response to assertion of the FREEZE signal. The following
table shows possible responses.
SUPV — Supervisor/Unrestricted
0 = Unrestricted access
1 = Supervisor access
SUPV defines access to assignable ADC registers.
ADTEST
— ADC Test Register
$YFF702
ADTEST is used during factory test of the ADC.
Port ADA is an input port that shares pins with the A/D converter inputs. The port ADA data register
resides in the lower half of the PDR. Bit 7 always returns zero when read.
PDR[6:0] — Port ADA Data
A read of PDR[6:0] will return the logic level of the port A pins. If the input is outside the defined voltage
range, the result of the read will be indeterminate. Use of a port A pin for digital input does not preclude
use as an analog input.
ADCMCR
— ADC Module Configuration Register
$YFF700
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
STOP
FRZ
NOT USED
SUPV
NOT USED
RESET:
1
0
FRZ
Response
00
Ignore FREEZE
01
Reserved
10
Finish conversion, then freeze
11
Freeze immediately
PORTADA
— Port ADA Data Register
$YFF706
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
NOT USED
PORT ADA DATA
RESET:
Reflects state of the input pins
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68334GCEH16 制造商:Freescale Semiconductor 功能描述:Microcontroller
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