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SE370C686AFZT Datasheet(PDF) 2 Page - Texas Instruments |
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SE370C686AFZT Datasheet(HTML) 2 Page - Texas Instruments |
2 / 45 page TMS370Cx8x 8-BIT MICROCONTROLLER SPNS035B –DECEMBER 1995 – REVISED FEBRUARY 1997 2 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Pin Descriptions PINS TYPE† NAME PDIP (40) LCC (44) TYPE† DESCRIPTION A0 A1 A2 A3 A4 A5 A6 A7 18 17 16 15 14 13 12 11 20 19 18 17 16 15 13 12 I/O Port A is a general-purpose bidirectional I / O port. B0 B1 B2 B3 B4 B5 B6 B7 38 37 36 35 28 29 30 31 43 42 41 40 32 34 35 36 I/O Port B is a general-purpose bidirectional I / O port. C0 C1 C2 C3 C4 C5 C6 C7 39 40 1 2 3 4 — — 44 1 2 3 4 5 30 31 I/O Port C is a general-purpose bidirectional I / O port. D3 D4 D5 D6 D7 21 20 23 22 19 23 22 25 24 21 I/O Port D is a general-purpose bidirectional I / O port. D3 is also configurable as SYSCLK. INT1 INT2 INT3 6 7 8 7 8 9 I I/O I/O External (non-maskable or maskable) interrupt / general-purpose input pin External maskable interrupt input / general-purpose bidirectional pin External maskable interrupt input / general-purpose bidirectional pin T1IC / CR T1PWM T1EVT 26 25 24 28 27 26 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 RESET 5 6 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 the watchdog or oscillator fault circuit. MC 34 39 I Mode control pin; enables EEPROM write-protection override (WPO) mode, also EPROM VPP XTAL2 / CLKIN XTAL1 33 32 38 37 I O Internal oscillator crystal input / external clock source input Internal oscillator output for crystal VCC 10 10 Positive supply voltage VSS 27 14 Ground reference for digital logic NC 9 11, 29, 33 These pins have no connection to the internal die. † I = input, O = output |
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