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| 型號(hào)： | PCF84C12AP |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PDIP20 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件頁(yè)數(shù)： | 5/16頁(yè) |
| 文件大?。?/td> | 89K |
| 代理商： | PCF84C12AP |
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1998 May 11
5
Philips Semiconductors
Product specification
8-bit microcontroller
PCF84C12A
5
PINNING INFORMATION
5.1
Pinning
Fig.2 Pin configuration.
handbook, halfpage
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PCF84C12A
MBK778
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
INT/T0
VSS
T1
XTAL1
XTAL2
RESET
P1.0
P1.1
P1.3
P1.2
P1.4
VDD
5.2
Pin description
Table 1
DIP20 and SO20 packages
SYMBOL
PIN
TYPE
DESCRIPTION
P0.0 to P0.7
1 to 8
I/O
Port 0: 8-bit
quasi-bidirectional
I/O port
Interrupt/Test 0
ground
Test 1/count input of
8-bit timer/event
counter 1
crystal oscillator
input or external
clock input
crystal oscillator
output
reset input
Port 1: 4-bit
quasi-bidirectional
I/O port
positive supply
INT/T0
V
SS
T1
9
I
10
11
P
I
XTAL1
12
I
XTAL2
13
O
RESET
P1.0 to P1.4
14
I
15 to 19
I/O
V
DD
20
P
6
INSTRUCTION SET
Since the I
2
C-bus interface, Port 2 and derivative logic are
not provided, instructions associated with these functions
are not available.
ROM space is restricted to 1 kbyte for the PCF84C12A.
Therefore, the instructions SEL MB1/2/3 should be
avoided as they would define non-existing program
memory banks.
As RAM space is limited to 64 bytes, care should be taken
to avoid accesses to non-existing RAM locations.
Refer to the “PCF84CxxxA family” data sheet, for a
complete description of the instruction set.
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