參數(shù)資料
型號: PCA84C641
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-bit microcontrollers with OSD and VST(帶OSD 和 VST的8位微控制器)
中文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PDIP42
文件頁數(shù): 16/40頁
文件大小: 233K
代理商: PCA84C641
1996 Nov 29
16
Philips Semiconductors
Product specification
8-bit microcontrollers with OSD and VST
84C44X; 84C64X; 84C84X
11 INPUT/OUTPUT (I/O)
Each parallel I/O port line may be individually configured
using one of three possible I/O mask options.
The three I/O mask options are specified below:
Option 1 Standard port with switched pull-up current
source, Fig.15.
Option 2 Open drain, Fig.16.
Option 3 Push-pull (output only), Fig.17.
Table 5 specifies the possible port option list. When these
devices are used for emulation purposes, in order to match
the piggy back device provided it is recommended that the
port options listed in Table 6 are used.
handbook, full pagewidth
MLA696
TR3
I/O PORT
LINE
SLAVE
D
SQ
SQ
MASTER
D
MQ
WRITE PULSE
DATA BUS
ORL/ANL/MOV
IN/MOV
TR1
VSS
TR2
VDD
constant
current
source
100
μ
A typ.
Fig.15 Standard output with switched pull-up current source (Option 1).
handbook, full pagewidth
MLA697
I/O PORT
LINE
SLAVE
D
SQ
SQ
MASTER
D
MQ
WRITE PULSE
OUTL/ORL/ANL
DATA BUS
ORL/ANL
IN
TR1
VSS
VDD
Fig.16 Open drain type I/O (Option 2).
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