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PCF84C00B Schematic ( PDF Datasheet ) - NXP Semiconductors

Teilenummer PCF84C00B
Beschreibung 8-bit microcontroller with I2C-bus interface
Hersteller NXP Semiconductors
Logo NXP Semiconductors Logo 




Gesamt 24 Seiten
PCF84C00B Datasheet, Funktion
INTEGRATED CIRCUITS
DATA SHEET
PCF84C00
8-bit microcontroller with I2C-bus
interface
Product specification
Supersedes data of May 1996
File under Integrated Circuits, IC14
1996 Nov 25






PCF84C00B Datasheet, Funktion
Philips Semiconductors
8-bit microcontroller with I2C-bus interface
Product specification
PCF84C00
Table 2 PCF84C00T (see Fig.5)
SYMBOL
P2.2
SDA/P2.3
PIN TYPE
1 I/O
2 I/O
SCLK
P0.0 to P0.1
DXALE
3
4, 5
6
I/O
I/O
O
n.c.
P0.2 to P0.7
INT/T0
7
8 to 13
14
I/O
I
T1 15 I
D0 to D2
16 to 18 I/O
A12
DXWR
19 O
20 O
n.c.
A11 to A6
VSS
A5 to A0
DXRD
21
22 to 27
28
29 to 34
35
O
P
O
O
D3 to D7
PSEN
XTAL1
XTAL2
36 to 40 I/O
41 O
42 I
43 I/O
DESCRIPTION
1 bit of Port 2: 4-bit quasi-bidirectional I/O port
bidirectional data line of the I2C-bus interface; or 1 bit of Port 2: 4-bit
quasi-bidirectional I/O port
bidirectional clock line of the I2C-bus interface
2 bits of Port 0: 8-bit quasi-bidirectional I/O port
Address latch enable: on the falling edge of DXALE, the Dx address can be
latched in an external latch. This signal occurs only during execution of the
MOV Dx, A, MOV A, Dx, ANL Dx, A and ORL Dx, A instructions, with
x = 0 to 255. It is active during TS10 of cycle 1 and the first half of TS1 of
cycle 2.
not connected
6 bits of Port 0: 8-bit quasi-bidirectional I/O port
Interrupt/Test 0: external interrupt input (negative edge triggered)/test input
pin. When used as a test input, this pin is directly tested by conditional branch
instructions JT0 and JNT0; note 1.
Test 1: test input pin, directly tested by conditional branch instructions JT1 and
JNT1. T1 may also be selected as an input to the 8-bit timer/event counter via
the STRT CNT instruction.
3 bits of 8-bit data bus: for external memory and peripherals. The specified
Stop mode supply current is valid only if external pull-ups are connected to all
data lines.
1 bit of 13-bit address bus: for external memory and peripherals
Write strobe (active LOW): on the rising edge, data on D0-D7 may be written
to external registers. This signal occurs only during MOV Dx, A, ANL Dx, A
and ORL Dx, A instructions, with x = 0 to 255. It is active during TS7 of
cycle 2.
not connected
6 bits of 13-bit address bus: for external memory and peripherals
ground: circuit earth potential
6 bits of 13-bit address bus: for external memory and peripherals
Read strobe (active LOW): when this signal is active, external registers
emulating Dx registers can be read by the data bus. This signal occurs only
during execution of MOV A, Dx, ANL Dx, A and ORL Dx, A instructions, with
x = 0 to 255. It is active during TS3 and TS4 of cycle 2.
5 bits of 8-bit data bus: for external memory and peripherals. The specified
Stop mode supply current is valid only if external pull-ups are connected to all
data lines.
Program store enable (active LOW): PSEN is used to enable external
program memory and is active during TS9 and TS10 of each machine cycle
and TS1 of each following cycle. PSEN is HIGH during the Stop mode.
oscillator input: input from a crystal which determines the internal oscillator
frequency or an external clock generator
oscillator output: output of the inverting amplifier
1996 Nov 25
6

6 Page









PCF84C00B pdf, datenblatt
Philips Semiconductors
8-bit microcontroller with I2C-bus interface
Product specification
PCF84C00
handbook, h4alfpage
IOL
(mA)
3
MGG411
handbook, h8alfpage
IOL
(mA)
6
MGG412
24
12
0
0 2 4 6 VDD (V) 8
VO = 0.4 V.
Fig.10 Typical output sink current (IOL), outputs
P0.0 to P0.7 and P2.0 to P2.2, as a function
of the supply voltage (VDD).
0
0 2 4 6 VDD (V) 8
VO = 0.4 V.
Fig.11 Typical output sink current (IOL), outputs
P2.3/SDA and SCLK, as a function of the
supply voltage (VDD).
handboIoOkL,2h0alfpage
(mA)
16
MGG413
12
8
4
0
02 468
VDD (V)
VO = 1.2 V.
Fig.12 Typical output sink current (IOL), outputs
P1.0 to P1.7, as a function of the supply
voltage (VDD).
1996 Nov 25
160
handbook, halfpage
IOH
(µA)
120
80
MGG414
(1)
(2)
40
0
02 468
VDD (V)
(1) VO = VSS.
(2) VO = 0.7VDD.
Fig.13 Typical push-pull output source current
(IOH) as a function of the supply voltage
(VDD).
12

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