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TMS370 Datasheet(PDF) 2 Page - Texas Instruments |
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TMS370 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 50 page TMS370Cx1x 8-BIT MICROCONTROLLER SPNS012F – MAY 1987 – REVISED FEBRUARY 1997 2 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Pin Descriptions 28 PINS DIP and LCC I/O† DESCRIPTION NAME NO. A0 A1 A2 A3 A4 A5 A6 A7 14 13 11 10 9 8 7 3 I/O Port A is a general-purpose bidirectional I / O port. D3 D4 D5 D6 D7 28 26 15 1 2 I/O Port D is a general-purpose bidirectional I / O port. D3 is also configurable as SYSCLK. INT1 INT2 INT3 16 17 18 I I/O I/O External interrupt (non-maskable or maskable) / general-purpose input pin External maskable interrupt input / general-purpose bidirectional pin External maskable interrupt input / general-purpose bidirectional pin T1IC / CR T1PWM T1EVT 22 21 20 I/O Timer1 input capture / counter reset input pin / general-purpose bidirectional pin Timer1 PWM output pin / general-purpose bidirectional pin Timer1 external event input pin / general-purpose bidirectional pin SPISOMI SPISIMO SPICLK 25 23 24 I/O SPI slave output pin, master input pin / general-purpose bidirectional pin SPI slave input pin, master output pin / general-purpose bidirectional pin SPI bidirectional serial clock pin / general-purpose bidirectional pin RESET 27 I/O System reset bidirectional pin; as input pin, RESET initializes the microcontroller; as open-drain output, RESET indicates that an internal failure was detected by watchdog or oscillator fault circuit. MC 19 I Mode control input pin; enables EEPROM write protection override (WPO) mode, also EPROM VPP XTAL2 / CLKIN XTAL1 5 6 I O Internal oscillator crystal input / External clock source input Internal oscillator output for crystal VCC 4 Positive supply voltage VSS 12 Ground reference † I = input, O = output |
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