MB88141 Datasheet, PDF (7/20 Pages) Fujitsu Component Limited. – D/A Converter for Digital Tuning (With Built-in OP Amp and I/O Expander)

MB88141
(4) Channel Selection (8 bit)
C7 C6 C5 C4 C3 C2 C1 C0
××××0000
××××0001
Channel select
All channels selected *¹
AO1 selected
××××1100
AO12 selected
××××1101
Don’t care
××××1110
Don’t care
××××1111
All channels selected *²
×: Don’t care
*1: The 1 byte of data following the channel selection is set on all channels (all channels set to the same data value).
S Slave address (7 bits) 0 A
XXXX0000
A
D/A data (8 bits)
AP
*2: The 12 bytes of data following the channel selection are set on all channels (all channels set to separate data
values).
S Slave address 0 A XXXX1111 A AO1 data A • • •
AO12 data A P
: Sent from master device
: Sent from MB88141 (slave device)
S: “Start” condition P: “Stop” condition A: “Acknowledge” output
Note: Setting will repeat, continuing in order from ch1, until the start and stop conditions are acknowledged.
(5) D/A Data (8 bits)
D7 D6 D5 D4 D3 D2 D1 D0
00000000
00000001
00000010
Channel select
≅ VSS
≅ (VREF / 256) × 1 + VSS
≅ (VREF / 256) × 2 + VSS
11111110
11111111
Note: VREF = VDD − VSS
≅ (VREF / 256) × 254 + VSS
≅ (VREF / 256) × 255 + VSS
7