Fujitsu FR81S User Manual
CHAPTER 44: 12-BIT A/D CONVERTER
3. Configuration
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : 12-BIT A/D CONVERTER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
9
3. Configuration
This section explains the configuration of the 12-bit A/D converter.
Configuration of A/D Activation Compare
Figure 3-1 Configuration of A/D Activation Compare (n=31 AD converter unit 0)
(ADTSS)
START
(ADTSE)
ADT31-ADT00
(AICR)
AN31E-AN0E
Compare buffer
register 0
(ADCOMPB0)
Compare register 0
(ADCOMP0)
(ADTCS0)
BUFX
BTS
(ADTCS0)
SEL1,SEL0
Compare circuit
(ADTECS0)
CHSEL4-CHSEL0
(ADTCS0)
STS1,
STS0 RPT
PRT PRTS
Activation request
Free-run timer 0
External trigger 0
0 detection and
Compare clear
Compare clear
（for A/D activation channel 0）
Free-run timer
（for A/D activation channel 0）
（for A/D activation channel 0）
Conversion completion
evaluation
(ADTCS0)
BUSY
(ADTCS0)
INT
INTE
(ADTCD0)
ERR
ERRST D11-D0
Range
compare
(ADRCCS0)
RCOIE
RCOE
RCOTS1,
RCOTS0
上下限
閾値選択
RCOIRS
(ADRCOT)
RCOOF0
(ADRCCS0)
(ADRCIF)
RCINT0
(ADRCCS0)
A/D conversion completion interrupt 0
Range compare interrupt 0
Actiation cannel 0
Activation channel 1-[n]
Compare channel number
during A/D activation,
A/D conversion completion,
A/D conversion data
Activation request analog
channel number 1-[n]
Compare match activation request 1-[n]
External trigger/reload timer/PPG
activation request1-[n]
Software activation request 1-[n]
Activation request analog
channel number
Compare match
activation request 0
External trigger/reload timer/PPG
activation request 0
Software activation request 0
0
1-[n]
Free-run timer,
0 detection and
Compare clear
（for A/D activation channel 1-[n]）
A/D conversion completion interrupt 1-[n]
Range compare interrupt 1-[n]
Range compare interrupt 1-[n]
A/D activation compare
Analog channel input control
(ADNCS0)
CNTEN0
CCNT03-
CCNT00
Range compare upper threshold register 0-3
(ADRCUT0-3)
Range compare lower threshold register 0-3
(ADRCLT0-3)
RCOCD2
-RCOCD0
(ADSCANS0)
SCINT
SCIE
SCMD
(ADPRTF)
PRTF0
(ADEOCF)
EOCF0
Scan Conversion
time control
Scan conversion completion interrupt
(ADSCANS0)
0
1-n
(ADTECS0)
STS2
PPG0 （for A/D activation channel 0）
PPG1-[n] （for A/D activation channel 1-[n]）
Upper
threshold
threshold
MB91520 Series
MN705-00010-1v0-E
1812