NXP Semiconductors
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
P1.0/T2
P1.1/T2EX
P1.2/ECI
P1.3/CEX0
P1.4/SS/CEX1
P1.5/MOSI/CEX2
P1.6/MISO/CEX3
P1.7/SPICLK/CEX4
RST
1
2
3
4
5
6
7
8
9
40 V
DD
39 P0.0/AD0
38 P0.1/AD1
37 P0.2/AD2
36 P0.3/AD3
35 P0.4/AD4
34 P0.5/AD5
33 P0.6/AD6
P3.0/RXD 10
P3.1/TXD 11
P3.2/INT0 12
P3.3/INT1 13
P3.4/T0 14
P3.5/T1 15
P3.6/WR 16
P3.7/RD 17
XTAL2 18
XTAL1 19
V
SS
20
P89V51RB2FN
P89V51RC2FN
P89V51RD2BN
P89V51RD2FN
32 P0.7/AD7
31 EA
30 ALE/PROG
29 PSEN
28 P2.7/A15
27 P2.6/A14
26 P2.5/A13
25 P2.4/A12
24 P2.3/A11
23 P2.2/A10
22 P2.1/A9
21 P2.0/A8
002aaa811
Fig 3. DIP40 pin configuration
44 P1.4/SS/CEX1
43 P1.3/CEX0
41 P1.1/T2EX
37 P0.0/AD0
36 P0.1/AD1
35 P0.2/AD2
P1.5/MOSI/CEX2
P1.6/MISO/CEX3
P1.7/SPICLK/CEX4
RST
P3.0/RXD
n.c.
P3.1/TXD
P3.2/INT0
P3.3/INT1
1
2
3
4
5
6
7
8
9
34 P0.3/AD3
33 P0.4/AD4
32 P0.5/AD5
31 P0.6/AD6
30 P0.7/AD7
29 EA
28 n.c.
27 ALE/PROG
26 PSEN
25 P2.7/A15
24 P2.6/A14
23 P2.5/A13
P2.4/A12 22
002aaa812
42 P1.2/ECI
40 P1.0/T2
V
SS
16
P89V51RB2BBC
P89V51RC2FBC
P89V51RD2FBC
P3.4/T0 10
P3.5/T1 11
P3.6/WR 12
P3.7/RD 13
XTAL2 14
XTAL1 15
n.c. 17
P2.0/A8 18
P2.1/A9 19
P2.2/A10 20
P2.3/A11 21
Fig 4. TQFP44 pin configuration
P89V51RB2_RC2_RD2_5
38 V
DD
39 n.c.
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 12 November 2009
5 of 80
PHILIPS [ NXP SEMICONDUCTORS ]
