Fujitsu Series 3 Manual

 
5. Registers 
 
5.15.  Comparison Time Setup Register (ADCT) 
The Comparison Time Setup Register (ADCT) sets the comparison time, which is part of the 
A/D conversion time. 
 bit 7 6 5 4 3 2 1 0 
Field Reserved CT2 CT1 CT0 
Attribute  - - -  - - R/W R/W R/W 
Initial value  X X X  X X 1 1 1 
 
[bit 7:3] Reserved: Reserved bits  When writing, always write 0. Wh en reading, 0 is always read. 
 
[bit 2:0] CT2:CT0: Compare clock  frequency division ratio setting bits 
These bits set the division ratio of...

 
5. Registers 
 
5.16.  A/D Operation Enable Setup Register (ADCEN) 
The A/D Operation Enable Setup Register (ADCEN) is used to turn the 12-bit A/D converter to 
the operation enable state. 
 bit 7 6 5 4 3 2 1 0 
Field Reserved READY ENBL 
Attribute  - - -  - - - R R/W 
Initial value  X X X  X X X  0 0 
 
[bit 7:2] Reserved: Reserved bits  When writing, always write 0. Wh en reading, 0 is always read. 
 
[bit1] READY : A/D operation enable state bit  This bit indicates whether the A/D converter is in...

 
5. Registers 
 FUJITSU SEMICONDUCTOR LIMITED 
Chapter: 12-bit A/D Converter 
FUJITSU SEMICONDUCTOR CONFIDENTIAL  52 
The cycle number of the base clock (HCLK) necessary as  the period of operation enable state transitions 
depends on the CT[2:0] set value of the ADCT register . The cycle number for the set value is as follows: 
ADCT.CT[2:0] Description 
0b000 72 cycles 
0b001 108 cycles 
0b010 144 cycles 
0b011 180 cycles 
0b100 216 cycles 
0b101 252 cycles 
0b110 288 cycles 
0b111 324 cycles 
 
Period...

 
 
 
 FUJITSU SEMICONDUCTOR LIMITED 
MN706-00002-1v0-E 
788 
MB9Axxx/MB9Bxxx  Series  

 
1. Overview 
 
Chapter: A/D Timer Trigger Selection 
This chapter explains the functions and operations to select a timer trigger of the A/D 
converter. 
 
1.
 Overview 
2. Registers 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CODE: 9BFBATSB-E01.2 
FUJITSU SEMICONDUCTOR LIMITED 
CHAPTER  18-4: A/D Timer  Trigger  Selection 
MN706-00002-1v0-E 
789 
MB9Axxx/MB9Bxxx  Series  

 
1. Overview 
 
1. Overview 
This section explains the operations to select a timer trigger of the A/D converter. 
 Selecting a timer trigger of the A/D converter 
The 10-bit A/D converter and th e 12-bit A/D converter are started by the factors shown in Ta b l e  1 - 1 . 
Table 1-1 A/D converter start factor 
Conversion type Start factor 
Priority level 1 conversion    Input from an external trigger pin (at falling edge) 
Priority level 2 conversion  
  Software (when the PCCR:PSTR bit is set to 1)...

 
2. Registers 
 
2. Registers 
This section explains the configuration and functions of the registers used to select an A/D 
timer trigger. 
 List of timer trigger selecti on registers for A/D converter 
Abbreviation Register  name See 
SCTSL Scan Conversion Timer Trigger Selection Register  2.1 
PRTSL Priority Conversion Timer Trigger Selection Register  2.2 
 
The functions of the timer trigger selection register s for the A/D converter are common to the 10-bit A/D 
converter and the 12-bit A/D...

 
2. Registers 
 
2.1.  Scan Conversion Timer Trigger Selection Register (SCTSL) 
The Scan Conversion Timer Trigger Selection Register (SCTSL) is used to select a timer 
trigger when performing scan conversion. 
 
bit 15 14 13 12 11 10 9 8 
Field Reserved SCTSL[3:0] 
Attribute  R R R  R R/W  R/W  R/W R/W 
Initial value  X X X  X 0 0  0 0 
 
[bit 15:12] Reserved: Reserved bits 
Write Has no effect on operation. 
Read The value is undefined. 
 
[bit 11:8] SCTSL: Scan conversion timer trigger selection bit...

 
2. Registers 
 FUJITSU SEMICONDUCTOR LIMITED 
Chapter: A/D Timer Trigger  Selection 
FUJITSU SEMICONDUCTOR CONFIDENTIAL  6 
2.2.  Priority Conversion Timer Trigger Selection Register  (PRTSL) 
The Priority Conversion Timer Trigger Selection Register (PRTSL) is used to select a timer 
trigger when performing priority conversion. 
 
bit 7 6 5 4 3 2 1 0 
Field Reserved PRTSL[3:0] 
Attribute  R R R  R R/W  R/W  R/W R/W 
Initial value  X X X  X 0 0  0 0 
 
[bit 7:4] Reserved: Reserved bits 
Write Has no...

 
 
 
 FUJITSU SEMICONDUCTOR LIMITED 
MN706-00002-1v0-E 
794 
MB9Axxx/MB9Bxxx  Series