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EM78P312NS Datasheet(PDF) 6 Page - ELAN Microelectronics Corp |
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EM78P312NS Datasheet(HTML) 6 Page - ELAN Microelectronics Corp |
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6 / 68 page  EM78P312N 8-Bit Microcontroller 2 • Product Specification (V1.0) 10.03.2006 (This specification is subject to change without further notice) 4 Pin Description Table 1 Symbol Pin No. Type Function VDD 28 − Power supply OSCI 2 I Crystal type: Crystal input terminal RC type: RC oscillator input pin OSCO 1 I/O Crystal type: Output terminal for crystal oscillator RC type: Instruction clock output External clock signal input /RESET 27 I Input pin with Schmitt Trigger. If this pin remains at logic low, the controller will also remain in reset condition. P60~P67 19~26 I/O 8-bit bidiectional input/output pins. P60 can be used as external Interrupt 0 (/INT0). P61 can be used as external Interrupt 1 (INT1). P62 can be used as 16-bit Timer/Counter 2 (TC2). P63 can be used as divider output (/TONE). P64 slave mode enable (/SS). P60 ~ P63 can be used as pull-high or pull-low pins. P70~P73 15~18 I/O 8-bit bidiectional input/output pins. P70 can be used as SPI serial clock input/output (/SCK) P71 can be used as SPI serial data input (SI) or UART data receive input (RX) P72 can be used as SPI serial data output (SO) or UART data transmit output (TX) P73 can be used as Sleep mode release input (/SLEEP) or external interrupt Input 5 (/INT5) P70 ~ P73 can be used as pull-high or pull-low pins P80~P81 12~13 I/O 2-bit bidiectional input/output pins. P80 can be used as 8-bit Timer/Counter 3 (TC3) or external Interrupt Input 3 (INT3). P81 can be used as 8-bit Timer/Counter 4 (TC4) or programmable divider output (PDO). P80 ~ P81 can be used as pull-high or pull-low pins. P90~P97 4~11 I/O 8-bit bidiectional input/output pins. P90~P97 can be used as 8 channel 10-bit resolution A/D converter. P97 can be used as AD reference power supply input (VREF). VSS 14 − Ground NC 3 − No connection OTP Programming Pins VPP 27 I Programming voltage input ACLK 1 I CLK for OTP memory address increment DATAIN 25 I/O ROM code series input and series output pin DINCK 26 I ROM code input clock PGMB 24 I Program write enable pin. Active low. OEB 23 I Output enable pin. Active low. |
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