m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 165

• Manufacturer Part Number: m30262f8gp
• Description: Renesas 16-bit Cmos Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

A-D Converter
Table 1.16.5. Single sweep mode specifications
Figure 1.16.6. A-D conversion control registers in single sweep mode
Reading of A-D result
Interrupt request
generation timing
Input pin
(3) Single sweep mode
Function
Start condition
Stop condition
In single sweep mode, the pins selected using the A-D sweep pin select bits, are used for one-by-one A-
D conversion. Table 1.16.5 shows the specifications of single sweep mode. Figure 1.16.6 shows the
settings of the A-D control registers in single sweep mode.
A-D control register 0 (Note)
A-D control register 1 (Note 1)
b7
b7
Note: If the A-D control register is rewritten during A-D conversion, the conversion result is indeterminate.
Note 1: If the A-D control register is rewritten during A-D conversion, the conversion result is indeterminate.
Note 2: If the VCUT bit is reset from "0" (Vref unconnected) to "1" (Vref connected), wait for 1 µs or more before starting
Item
b6
b6
b5
b5
1
A-D conversion.
Preliminary Specifications Rev. 0.9
b4
1 0
b4
Specifications in this manual are tentative and subject to change.
b3
b3
b2
b2
0
The pin selected by the analog input pin select bits is used for one A-D conversion
AN
End of A-D conversion
Read A-D register that corresponds to selected analog input pin
Writing "1" to the A-D conversion start flag
• End of A-D conversion (A-D conversion start flag changes to "0" - except when
• Writing "0" to the A-D conversion start flag
b1
b1
external trigger is selected
0
- AN
b0
b0
Bit symbol
Bit symbol
1
SCAN0
In an attempt to write to these bits, write 0. The value, if read, turns out to be 0.
(2 pins), AN
SCAN1
Nothing is assigned.
ADST
CKS0
VCUT
CH0
CH1
CH2
MD0
MD1
TRG
CKS1
Symbol
ADCON0
Symbol
ADCON1
MD2
BITS
A-D operation mode
select bit 1
Analog input pin select
bit
A-D operation mode
select bit 0
Trigger select bit
A-D conversion start flag 0 : A-D conversion disabled
Frequency select bit1
Vref connect bit (Note 2)
Frequency select bit 0
A-D sweep pin
select bit
8/10-bit mode select bit
0
- AN
Bit name
Renesas Technology Corp.
Bit name
3
(4 pins), AN
Address
Address
03D6
03D7
Specification
16
16
0
- AN
Refer to table 1.16.2
Set to 0 when this mode is selected
1 : Vref connected
0 : 8-bit mode
1 : 10-bit mode
b4 b3
1 0 : Single sweep mode
1 : A-D conversion started
Refer to table 1.16.2
00000XXX
Invalid in single sweep mode
0 : Software trigger
1 : AD
When reset
When reset
When single sweep mode is selected
5
b1 b0
0 0 : AN
0 1 : AN
1 0 : AN
1 1 : AN
(6 pins), or AN
00
TRG
16
0
0
0
0
trigger
, AN
2
to AN
to AN
to AN
1
(2 pins)
Function
3
5
7
Function
(4 pins)
(6 pins)
(8 pins)
0
- AN
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
7
(8 pins)
R
R
W
W
M16C/26 Group
159