參數(shù)資料
型號: MC68HC705P6ACP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Microcontroller Unit
中文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封裝: PLASTIC, DIP-28
文件頁數(shù): 81/130頁
文件大小: 1541K
代理商: MC68HC705P6ACP
Analog Subsystem
A/D Status and Control Register (ADSC)
MC68HC705P6A
Rev. 2.0
Advance Information
MOTOROLA
Analog Subsystem
81
obtained. See
9.3.2 Reference Voltage (VREFH)
for more
information.
ADON
A/D Subsystem On
When the A/D subsystem is turned on (ADON = 1), it requires a time,
t
ADON
, to stabilize before accurate conversion results can be attained.
CH2
CH0
Channel Select Bits
CH2, CH1, and CH0 form a 3-bit field which is used to select an input
to the A/D converter. Channels 0
3 correspond to port C input pins
PC6
PC3. Channels 4
6 are used for reference measurements.
Channel 7 is reserved. If a conversion is attempted with channel 7
selected, the result will be $00.
Table 9-1
lists the inputs selected by
bits CH0-CH3.
If the ADON bit is set and an input from channels 0
4 is selected, the
corresponding port C pin
s DDR bit will be cleared (making that port
C pin an input). If the port C data register is read while the A/D is on
and one of the shared input channels is selected using bit CH0
CH2,
the corresponding port C pin will read as a logic 0. The remaining port
C pins will read normally. To digitally read a port C pin, the A/D
subsystem must be disabled (ADON = 0), or input channels 5
7 must
be selected.
Table 9-1. A/D Multiplexer Input
Channel Assignments
Channel
Signal
0
AD0
port C, bit 6
1
AD1
port C, bit 5
2
AD2
port C, bit 4
3
AD3
port C, bit 3
4
V
REFH
port C, bit 7
5
(V
REFH
+ V
SS
)/2
6
V
SS
7
Reserved for factory test
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705P6ADW 制造商:Rochester Electronics LLC 功能描述:MCU, 176 BYTES RAM, A/D - Bulk
MC68HC705P6AMDW 功能描述:IC MCU 4.6K OTP 2.1MHZ 28-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設(shè)備:POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
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