MB88101A Fujitsu Microelectronics, Inc., MB88101A Datasheet - Page 3

• Manufacturer Part Number: MB88101A
• Description: CMOS A/D Converter (with 4-channel Input at 12-bit Resolution)
• Manufacturer: Fujitsu Microelectronics, Inc.

• Channel selection
Table 1
PIN DESCRIPTION
Pin no.
C
H
H
L
L
14
13
12
11
10
15
16
1
1
2
5
6
7
8
3
4
9
Pin Settings and Channel Selection
C
H
H
L
L
0
Symbol
MOD0
MOD1
SAMP
CLK
A
D
V
AN
AN
AN
AN
DO
V
CS
C
C
GND
REF
GND
CC
0
1
0
1
2
3
I/O
Channel
—
—
—
—
O
O
I
I
I
I
I
AN
AN
AN
AN
Analog input pins. One of these channels can be selected depending on
the C
This pin outputs the result of A/D conversion. The result is 12-bit serial
data output in synchronization with the rise of CLK.
Clock input pin for A/D conversion
Chip select signal input pin. Setting the signal level to “L” after turning
the power on starts A/D conversion; setting it to “H” stops A/D
conversion. When this pin is “H”, the DO and SAMP pins are “Hi-z”.
Input pins for selecting the analog input channels from among pins AN
to AN
and the channels selected. To switch the channel in mode 2 or 3, set
these pins before the SAMP pin goes “H”.
Conversion mode setting pins. For the correspondence between the pin
settings and the modes selected, see Table 2 and “ FUNCTIONAL
DESCRIPTION.”
This pin becomes active in prior to data output. Serial data is output from
the DO pin three clock cycles after the signal level at this pin goes “L”
after “H” for one clock cycle.
Reference voltage input pin
Analog circuit ground pin
Digital circuit ground pin
Power supply pin
0
1
2
3
0
3
. See Table 1 for the correspondence between the pin settings
and C
1
settings.
• Mode selection
Table 2
MOD 0
H
H
L
L
Descriptions
Pin Settings and Mode Selection
MOD1
H
H
L
L
MB88101A
(Disabled)
Mode 1
Mode 2
Mode 3
Mode
0
3