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PCA84C441 датащи(PDF) 16 Page - NXP Semiconductors |
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PCA84C441 датащи(HTML) 16 Page - NXP Semiconductors |
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16 / 40 page ![]() 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 OUTL/ORL/ANL/MOV DATA BUS ORL/ANL/MOV IN/MOV TR1 VSS TR2 VDD constant current source 100 µA 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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