m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 167

• 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 1.16.7. Repeat sweep mode 1 specifications
Figure 1.16.8. A-D conversion control registers in repeat sweep mode 1
(5) Repeat sweep mode 1
Interrupt request
generation timing
Function
Start condition
Stop condition
Reading of A-D result
Input pin
In repeat sweep mode 1, all pins are used for A-D conversion with emphasis on the pin or pins selected
using the A-D sweep pin select bits. Table 1.16.7 shows the specifications of repeat sweep mode 1.
Figure 1.16.8 shows the settings of the A-D control registers in repeat sweep mode 1.
Item
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
b6
b6
Preliminary Specifications Rev. 0.9
b5
b5
1
Specifications in this manual are tentative and subject to change.
A-D conversion.
b4
1 1
b4
b3
b3
The pin selected by the analog input pin select bits is used for one A-D conversion
b2
b2
0
Writing "1" to the A-D conversion start flag
None generated
Writing "0" to the A-D conversion start flag
With emphasis on these pins:
Read A-D register that corresponds to selected analog input pin (at any time)
b1
b1
AN
b0
b0
0
, AN
Bit symbol
Bit symbol
SCAN0
In an attempt to write to these bits, write 0. The value, if read, turns out to be 0.
SCAN1
Nothing is assigned.
ADST
CKS0
VCUT
MD0
MD1
TRG
CKS1
0
CH0
CH1
CH2
MD2
BITS
Symbol
ADCON0
Symbol
ADCON1
- AN
1
(2 pins), AN
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
Renesas Technology Corp.
Bit name
Bit name
Address
Address
0
03D7
03D6
- AN
Specification
16
16
2
(3 pins), AN
Refer to table 1.16.2
Set to 1 when this mode is selected
1 : Vref connected
0 : 8-bit mode
1 : 10-bit mode
1 1 : Repeat sweep mode 1
1 : A-D conversion started
00000XXX
Invalid in repeat sweep mode 1
b4 b3
0 : Software trigger
1 : AD
Refer to table 1.16.2
When reset
When reset
When repeat sweep mode 1 is selected
b1 b0
0 0 : AN
0 1 : AN
1 0 : AN
1 1 : AN
00
TRG
16
0
0
0
0
0
trigger
- AN
, AN
2
(1 pin)
to AN
to AN
1
3
(2 pins)
(4 pins)
Function
2
3
Function
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(3 pins)
(4 pins)
R
R
W
W
M16C/26 Group
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