FT51A Advanced MCU with 8051 Compatible Core IC Datasheet
Version 1.5
Document No.: FT_000877
Clearance No.: FTDI#420
Pin Nos.
48 pin
Name
Type
Description
44 pin
27
32 pin
-
28 pin
-
INPUT/
OUTPUT
Downstream USB Data
Signal Minus.
30
29
32
31
DW_DM
DW_DP
UP_DM
UP_DP
INPUT/
OUTPUT
Downstream USB Data
Signal Plus.
26
29
28
-
-
INPUT/
OUTPUT
Upstream USB Data
Signal Minus.
21
20
22
21
INPUT/
OUTPUT
Upstream USB Data
Signal Plus.
Device Reset. Active
HIGH
5
4
-
4
-
5
-
RST
INPUT
INPUT
Reference voltage.
Connect to VOUT3V3.
44
VREF
INPUT/
OUTPUT
DEBUGG
ER
16
14
13
15
Chip Debug Port
1,2,3
1,2,3,5,7,8
9,10,11
12,13,
1,2,3,
4,
P1.0_
P1.7
General Purpose
digital IO pins. Weak
internal pull up
enabled on exit from
POR or hardware
reset.
1,2,3,4,6,
9,10,11,12
13,14,15
5,6,7
8,9,10
11,12,
28,29,30
31,32
INPUT/
OUTPUT
6,8,9,
10,11
P3.0_
P3.7
(DIO0_D
IO15)
40,41,42
43,44
12,13
,14
45,46,47,48
P0.0_
P0.7
ADC analogue input
pins. Can also be used
as digital IO pins.
AIO0 – AIO7 have no
pull ups when using
44 or 48 pin packages.
17,18
16,17,181 ,19
20,21,22,23 18,19,20,21
24,25,26,27 22,23,24,25
33,34,35,36 30,31,32,33
37,38,39,40 34,35,36,37
INPUT/
OUTPUT
P2.0_
P2.7
(AIO0_A
IO15)
9,22,23
24,25
20,23
,24
25,26
Table 2-2 – Common Function pins
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