參數資料
型號: MS80C51C-30R
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 30 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數: 62/132頁
文件大小: 10886K
代理商: MS80C51C-30R
267
8151H–AVR–02/11
ATmega128A
HOLD
Input
Sample & Hold signal.
Sample analog signal
when low. Hold signal
when high. If gain stages
are used, this signal
must go active when
ACLK is high.
11
IREFEN
Input
Enables Band-gap
reference as AREF
signal to DAC
00
MUXEN_7
Input
Input Mux bit 7
0
MUXEN_6
Input
Input Mux bit 6
0
MUXEN_5
Input
Input Mux bit 5
0
MUXEN_4
Input
Input Mux bit 4
0
MUXEN_3
Input
Input Mux bit 3
0
MUXEN_2
Input
Input Mux bit 2
0
MUXEN_1
Input
Input Mux bit 1
0
MUXEN_0
Input
Input Mux bit 0
1
NEGSEL_2
Input
Input Mux for negative
input for differential
signal, bit 2
00
NEGSEL_1
Input
Input Mux for negative
input for differential
signal, bit 1
00
NEGSEL_0
Input
Input Mux for negative
input for differential
signal, bit 0
00
PASSEN
Input
Enable pass-gate of gain
stages.
11
PRECH
Input
Precharge output latch of
comparator. (Active low)
11
SCTEST
Input
Switch-cap TEST
enable. Output from x10
gain stage send out to
Port Pin having ADC_4
00
ST
Input
Output of gain stages will
settle faster if this signal
is high first two ACLK
periods after AMPEN
goes high.
00
VCCREN
Input
Selects Vcc as the ACC
reference voltage.
00
Table 24-5.
Boundary-scan Signals for the ADC (Continued)
Signal
Name
Direction
as Seen
from the
ADC
Description
Recommen-
ded Input
when not
in Use
Output Values when
Recommended Inputs
are Used, and CPU is
not Using the ADC
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