p87lpc778 NXP Semiconductors, p87lpc778 Datasheet - Page 5

• Manufacturer Part Number: p87lpc778
• Description: Cmos Single-chip 8-bit 80c51 Microcontroller 128-byte Data Ram, 8 Kb Otp
• Manufacturer: NXP Semiconductors

Philips Semiconductors
5. Pinning information
Table 2:
9397 750 12378
Product data
Symbol
P0.0 - P0.7
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
Pin description
Pin
1, 20-16,
14, 13
1
20
19
18
17
16
14
5.1 Pinning
5.2 Pin description
Type
I/O
O
O
I
O
I
I
I
I
I
I
I
O
I
Fig 3. 20 pin DIP and SO configuration.
Description
Port 0: Port 0 is an 8-bit I/O port with a user-configurable output type. Port 0 latches are
configured in the quasi-bidirectional mode and have either ones or zeros written to them
during reset, as determined by the PRHI bit in the UCFG1 configuration byte. The
operation of port 0 pins as inputs and outputs depends upon the port configuration
selected. Each port pin is configured independently. Refer to
Table 67 “DC electrical characteristics”
The Keypad Interrupt feature operates with Port 0 pins.
Port 0 also provides various special functions as described below:
CMP2 — Comparator 2 output.
PWM3 — PWM output 3.
CIN2B — Comparator 2 positive input B.
PWM0 — PWM output 0.
CIN2A — Comparator 2 positive input A.
CIN1B — Comparator 1 positive input B.
AD0 — A/D channel 0 input.
CIN1A — Comparator 1 positive input A.
AD1 — A/D channel 1 input.
CMPREF — Comparator reference (negative) input.
AD2 — A/D channel 2 input.
CMP1 — Comparator 1 output.
AD3 — A/D channel 3 input.
handbook, halfpage
Rev. 01 — 31 March 2004
PWM3/CMP2/P0.0
X2/CLKOUT/P2.0
SDA/INT0/P1.3
SCL/T0/P1.2
PWM2/P1.7
PWM1/P1.6
INT1/P1.4
RST/P1.5
X1/P2.1
V SS
10
1
2
3
4
5
6
7
8
9
for details.
002aaa612
CMOS single-chip 8-bit microcontroller
20
19
18
17
16
15
14
13
12
11
P0.1/CIN2B/PWM0
P0.2/CIN2A
P0.3/CIN1B/AD0
P0.4/CIN1A/AD1
P0.5/CMPREF/AD2
V DD
P0.6/CMP1/AD3
P0.7/T1
P1.0/TxD
P1.1/RxD
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Section 8.9 “I/O ports”
P87LPC778
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