參數(shù)資料
型號: 8XC196LX
英文描述: 8XC196Lx - 8XC196Lx Supplement to 8X196Kx. 8X196Jx. 87C196CA User's Manual
中文描述: 8XC196Lx - 8XC196Lx補編8X196Kx。 8X196Jx。 87C196CA用戶手冊
文件頁數(shù): 47/136頁
文件大小: 659K
代理商: 8XC196LX
5-3
I/O PORTS
Figure 5-1. Ports 1, 2, 5, and 6 Internal Structure (87C196LA, LB Only)
5.2.1
Configuring Ports 1, 2, 5, and 6 (Bidirectional Ports)
Using the port mode register, you can individually configure each pin for port 1, 2, 5, and 6 to
operate either as a general-purpose I/O signal (I/O mode) or as a special-function signal (special-
function mode). In either mode, three configurations are possible: complementary output, high-
Q2
Q1
P
x
_MODE
P
x
_DRV
SFDIR
0
1
Px_REG
Sample
Latch
P
x_PIN
PH1 Clock
Internal Bus
SFDATA
Any Write to Px_MODE
Q
R
Weak
Pullup
RESET#
Q3
Q4
Buffer
Read Port
S
300ns Delay
I/O Pin
RESET#
A5265-01
150
to 200
R1
0
1
V
SS
Medium
Pullup
V
SS
V
SS
V
CC
RESET#
D
Q
LE
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相關代理商/技術參數(shù)
參數(shù)描述
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