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TMS370C077AFNL Datasheet(PDF) 2 Page - Texas Instruments |
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TMS370C077AFNL Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 60 page  TMS370Cx7x 8-BIT MICROCONTROLLER SPNS034C – SEPTEMBER 1995 – REVISED FEBRUARY 1997 2 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Pin Descriptions PIN † NAME SDIP (64) LCC (68) I/O† DESCRIPTION A0 A1 A2 A3 A4 A5 A6 A7 15 16 17 18 19 20 21 22 17 18 19 20 21 22 23 24 I/O Port A is a general-purpose bidirectional I/O port. B0 B1 B2 B3 B4 B5 B6 B7 60 61 62 63 64 1 2 3 65 66 67 68 1 2 3 4 I/O Port B is a general-purpose bidirectional I/O port. C0 C1 C2 C3 C4 C5 C6 C7 4 6 7 9 10 11 12 13 5 7 8 10 11 12 13 14 I/O Port C is a general-purpose bidirectional I/O port. INT1/NMI INT2 INT3 50 49 48 52 51 50 I I/O I/O External (nonmaskable or maskable) interrupt/general-purpose input pin External maskable interrupt input/general-purpose bidirectional pin External maskable interrupt input/general-purpose bidirectional pin AN0/E0 AN1/E1 AN2/E2 AN3/E3 AN4/E4 AN5/E5 AN6/E6 AN7/E7 14 34 35 36 37 38 39 42 36 37 38 39 40 41 42 43 I ADC1 analog input (AN0 – AN7) or positive reference pins (AN1 – AN7) Port E can be programmed individually as general-purpose input pins if not used as ADC1 analog input or positive reference input. VCC3 VSS3 32 33 34 35 ADC1 positive-supply voltage and optional positive-reference input pin ADC1 ground reference pin RESET 51 53 I/O System reset bidirectional pin. As an input, RESET initializes the microcontroller; as open-drain out- put, RESET indicates that an internal failure was detected by the watchdog or oscillator fault circuit. MC 5 6 I Mode control (MC) pin. MC enables EEPROM write-protection-override (WPO) mode, also EPROM VPP. XTAL2/CLKIN XTAL1 29 30 31 32 I O Internal oscillator crystal input / external clock source input Internal oscillator output for crystal VCC1 31, 57 33, 61 Positive supply voltage VCC2 — 15,63 Positive supply voltage for digital I/O † I = input, O = output |
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