ΜPD765A

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PD765A/B

The uPD765 is Floppy Disc Controller (FDC) IC.

Pinout:

RESET
RD
WR
CS
D/S
D0
D1
D2
D3
D4
D5
D6
D7
DRQ
DAQ
TC
IDX
INT
CLK
(0V) GND

1 °       40
2         39
3         38
4         37
5         36
6         35
7         34
8         33
9         32
10        31
11        30
12        29
13        28
14        27
15        26
16        25
17        24
18        23
19        22
20        21

VCC (+5V)
RW/SEEK
LCT/DIR
FR/STP
HDL
RDY
WP/TS
FLT/TR0
PS0
PS1
WDA
US0
US1
HD
MFM
WE
VCO/SYNC
RDD
RDW
WCK