參數(shù)資料
型號(hào)： S3C8444XX-TW
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, MROM, 18 MHz, MICROCONTROLLER, PQFP80
封裝： 12 X 12 MM, TQFP-80
文件頁(yè)數(shù)： 43/44頁(yè)
文件大?。?/td> 301K
代理商： S3C8444XX-TW
S3C8444
PRODUCT OVERVIEW
1–7
PIN DESCRIPTIONS
Table 1–1. S3C8444 Pin Descriptions
Pin
Name
Pin
Type
Pin
Description
Circuit
Type
QFP Pin
Number
Share
Pins
P0.0 - P0.7
I/O
Nibble programmable port; input or output mode
selected by software; Schmitt trigger input or push-
pull, open-drain output with software assignable
pull-ups; alternately configurable as external
interface address lines A8 - A15.
3
2, 1,
80-75
A8 - A15
P1.0 - P1.7
I/O
Same general characteristics as port 0; alternately
configurable as external interface address/data
lines AD0 - AD7.
3
73-66
AD0 - AD7
P2.0 - P2.7
I/O
General I/O port with Schmitt trigger input or push-
pull output. bit programmable;
P2.0 / Address Strobe (
AS)
P2.1 / Data Strobe (
DS)
P2.2 / Memory Write (
MW)
P2.3 / Data Memory select (
DM)
P2.4 / Memory Read (
MR)
P2.5 / Program Memory select (
PM)
P2.6 / timer A output (TA)
P2.7 / timer B output (TB)
5
19 - 12
AS, DS,
MW, DM,
MR, PM,
TA, TB
P3.0 - P3.7
I/O
General I/O port with bit programmable pins.
Schmitt trigger input or push-pull output with
software assignable pull-ups. Input or output mode
is selectable by software. P3.0 - P3.3 are alternately
used as inputs for external interrupts INT0-INT3,
respectively (with noise filters and interrupt control):
P3.0 / timer C clock input (TCCK) / INT0
P3.1 / timer D clock input (TDCK) / INT1
P3.2 / timer C gate input (TCG) / INT2
P3.3 / timer D gate input (TDG) / INT3
P3.6 / Capture data input (CAP)
P3.7 /
WAIT for slow memory interface
4
24-31
(See pin
description)
P4.0 - P4.7
I/O
General I/O port with bit programmable pins.
Schmitt trigger input or push-pull, open-drain output
with software assignable pull-ups. Input or output
mode is selectable by software. P4.0-P4.7 can
alternately be used as inputs for external interrupts
INT4-INT11, respectively (with noise filters and
interrupt control)
4
33-40
INT4 -
INT11
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