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P89CV51RB2FBC Datasheet(PDF) 5 Page - NXP Semiconductors

Part # P89CV51RB2FBC
Description  8-bit 80C51 5 V low power 64 kB flash microcontroller with 1 kB RAM, SPI, 6-clock CPU with 6/12-clock peripherals
PDF  73 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

P89CV51RB2FBC Datasheet(HTML) 5 Page - NXP Semiconductors

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P89CV51RB2_RC2_RD2_1
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 01 — 5 October 2007
5 of 73
NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
5.2 Pin description
Fig 3.
TQFP44 pin configuration
P89CV51RB2/RC2/RD2
P1[5]/CEX2/MOSI
P0[4]/AD4
P1[6]/CEX3/MISO
P0[5]/AD5
P1[7]/CEX4/SPICLK
P0[6]/AD6
RST
P0[7]/AD7
P3[0]/RXD
n.c.
P3[1]/TXD
P2[7]/A15
P3[4]/T0
P2[6]/A14
P3[5]/T1
P2[5]/A13
002aac961
EA
ALE
PSEN
P3[3]/INT1
P3[2]/INT0
n.c.
1
2
3
4
5
6
7
8
9
10
11
33
32
31
30
29
28
27
26
25
24
23
Table 3.
P89CV51RB2/RC2/RD2 Pin description
Symbol
Pin
Type
Description
PLCC44
TQFP44
P0[0] to P0[7]
I/O
Port 0: Port 0 is an 8-bit open-drain bidirectional I/O port. Port 0 pins that
have 1s written to them float, and in this state can be used as
high-impedance inputs. Port 0 is also the multiplexed low-order address
and data bus during accesses to external code and data memory. In this
application, it uses strong internal pull-ups when transitioning to 1s.
External pull-ups are required when used as a general purpose I/O port.
P0[0]/AD0
43
37
I/O
P0[0] — Port 0 bit 0.
I/O
AD0 — Address/data bit 0.
P0[1]/AD1
42
36
I/O
P0[1] — Port 0 bit 1.
I/O
AD1 — Address/data bit 1.
P0[2]/AD2
41
35
I/O
P0[2] — Port 0 bit 2.
I/O
AD2 — Address/data bit 2.
P0[3]/AD3
40
34
I/O
P0[3] — Port 0 bit 3.
I/O
AD3 — Address/data bit 3.
P0[4]/AD4
39
33
I/O
P0[4] — Port 0 bit 4.
I/O
AD4 — Address/data bit 4.
P0[5]/AD5
38
32
I/O
P0[5] — Port 0 bit 5.
I/O
AD5 — Address/data bit 5.



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