Philips Semiconductors Product data sheet
SC28L91
3.3 V or 5.0 V Universal Asynchronous
Receiver/Transmitter (UART)

2004 Oct 21 4

PIN CONFIGURATION DIAGRAM

80XXX PIN CONFIGURATION

Pin Function
1A3
2 IP0
3 WRN
4 RDN
5V
CC
6 No Connection
7 OP1
8 OP3
9 OP5
10 OP7
11 I/M
12 D1
13 D3
14 D5
15 D7
Pin Function
16 GND
17 GND
18 INTRN
19 D6
20 D4
21 D2
22 D0
23 NC
24 OP6
25 OP4
26 OP2
27 OP0
28 TxDA
29 RxDA
30 x1/clk
Pin Function
31 x2
32 RESET
33 CEN
34 IP2
35 IP6
36 IP5
37 IP4
38 VCC
39 VCC
40 A0
41 IP3
42 A1
43 IP1
44 A2
PQFP
44 34
1
11
33
23
12 22

SD00698

1
39
17
28
40
29
18
7
PLCC
6

SD00699

Pin Function
1NC
2A0
3 IP3
4A1
5 IP1
6A2
7A3
8 IP0
9 WRN
10 RDN
11 VCC
12 I/M
13 No Connection
14 OP1
15 OP3
Pin Function
16 OP5
17 OP7
18 D1
19 D3
20 D5
21 D7
22 VSS
23 NC
24 INTRN
25 D6
26 D4
27 D2
28 D0
29 OP6
30 OP4
Pin Function
31 OP2
32 OP0
33 TxDA
34 NC
35 RxDA
36 X1/CLK
37 X2
38 RESET
39 CEN
40 IP2
41 IP6
42 IP5
43 IP4
44 VCC

Note: Pins marked “No Connection” must NOT be connected.