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參數(shù)資料
| 型號： | NT6861 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 8-Bit Microcontroller for Monitor |
| 中文描述： | 8位微控制器的監(jiān)控 |
| 文件頁數(shù)： | 17/44頁 |
| 文件大?。?/td> | 455K |
| 代理商： | NT6861 |
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NT6861
17
11. I/O PORTs
NT6861 has 25 pins dedicated to input and output. These
pins are grouped into 4 ports .
11.1. Port0: P00 - P07
Port0 is an 8-bit bi-directional CMOS I/O port with PMOS
as internal pull-up (Figure 6). Each pin of Port0 may be bit
programmed as an input or output port without the
software controlling the data direction register. When Port0
works as output, the data to be output is latched to the port
data register and output to the pin. Port0 pins that have '1's
written to them are pulled high by the internal PMOS pull-
ups. In this state they can be used as input, then the input
signal can be read. This port outputs high after reset .
P00 - P05 are shared with DAC8 - DAC13 respectively. If
user sets ENDK8 - ENDK13 LOW in ENDAC register,
P00 - P05 will act as DAC8 - DAC13 respectively
(Figure 7). After the chip is reset, ENDK
- ENDK13 will
enter HIGH state and P00 - P05s will act as I/O ports.
P06, P07 are shared with VSYNCO & HSYNCO
respectively. If user sets ENH , ENV
to low in SYNCON
register, P06, P07 will act as VSYNCO & HSYNCO
respectively (Figure 8). After the chip is reset, ENH , ENV ,
will enter high state and P06, BP07 will act as I/O pins.
Addr.
Register
INIT
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
$0000
PT0
FFH
P07
P06
P05
P04
P03
P02
P01
P00
RW
$000B
SYNCON
FFH
NOHALF
ENHALF
-
FRUN
FRFREQ
HALFPO
L
ENH
ENV
W
$000C
ENDAC
FFH
ENAD1
ENAD0
ENDK13
ENDK12
ENDK11
ENDK10
ENDK9
ENDK8
W
Vcc
I/O
Data Out
Data In
Figure 6. I/O Structure
PWM
Output
PWM
Data In
Figure 7. PWM Output Structure
Vcc
O/P
Data Out
Figure 8. Output Structure
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NT6862 | 8-Bit Microcontroller for Monitor |
| NT6862U | 8-Bit Microcontroller for Monitor |
| NT6868A | Keyboard Controller |
| NT6868A-0011 | Keyboard Controller |
| NT6868A-10100 | Keyboard Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NT6861U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller for Monitor |
| NT6862 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller for Monitor |
| NT68625 | 制造商:NAIS 制造商全稱:Nais(Matsushita Electric Works) 功能描述: |
| NT6862U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller for Monitor |
| NT68667 | 制造商:NAIS 制造商全稱:Nais(Matsushita Electric Works) 功能描述:NOVATEK顯示器驅(qū)動芯片 |
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