參數資料
型號： PCA84C646
廠商： NXP Semiconductors N.V.
英文描述： Microcontrollers for TV tuning control and OSD applications(應用于TV調頻和OSD的微控制器)
中文描述： 微控制器的控制和調整（應用于電視調頻和OSD的微控制器應用的電視OSD）
文件頁數： 61/72頁
文件大小： 564K
代理商： PCA84C646
1995 Jun 15
61
Philips Semiconductors
Preliminary specification
Microcontrollers for TV tuning
control and OSD applications
PCA84C646; PCA84C846
18 INPUT/OUTPUT
There are 3 different port options available for the port pins
in the 84CXXX derivatives (see Figs 47, 48 and 49).
Each I/O port line may be individually configured using one
of three mask options. The three I/O mask options are
specified below:
Option 1 Standard input/output with switched pull-up
current source; this is shown in Fig.47.
Option 1 Input/output with Open drain output; this is
shown in Fig.48.
Option 2 Push-pull output; this is shown in Fig.49.
The state of each output port after a Power-on-reset can
also be selected using the mask options. All port mask
options are given in Section 19.1.
The output stage consists of 4 transistors:
TR1: N - channel transistor for ‘sink’
TR2: P - channel transistor for ‘boost-up’
TR3: P - channel transistor for ‘pull-up’
TR4: P - channel transistor for ‘constant current’.
See Tables 41 and 42 for possible port option list.
Fig.47 Standard output with switched pull-up current source (Option 1).
handbook, full pagewidth
D
D
MQ
SQ
SQ
data bus
write pulse
OUTL/ORL/ANL/MOV
IN/MOV
ORL/ANL/MOV
I/O port
line
TR3
TR2
TR1
V
100
μ
A typical (O
MED186 - 1
DD
VSS
Master
Slave
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PCA84C646P 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Microcontrollers for TV tuning control and OSD applications
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PCA84C822A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers for remote control transmitters
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