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TMSA370AC09A0A Datasheet(PDF) 2 Page - Texas Instruments |
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TMSA370AC09A0A Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 55 page  TMS370Cx9x 8-BIT MICROCONTROLLER SPNS036B – JANUARY 1996 – REVISED FEBRUARY 1997 2 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Pin Descriptions PIN † ‡ NAME SDIP (40) LCC (44) I/O† DESCRIPTION‡ A0 A1 A2 A3 A4 A5 A6 A7 38 39 40 01 02 03 04 05 42 43 44 02 03 04 05 06 I/O Port A is a general-purpose bidirectional I/O port. D3/SYSCLK D4 D5 D6 D7 26 28 29 27 30 29 31 32 30 33 I/O Port D is a general-purpose bidirectional I/O port. D3 is also configurable as SYSCLK. AN0/E0 AN1/E1 AN2/E2 AN3/E3 AN4/E4 AN5/E5 AN6/E6 AN7/E7 11 12 13 14 15 16 17 18 12 13 14 15 16 18 19 20 I ADC3 analog input (AN0 – AN7) or positive reference pins (AN6 – AN7) Port E can be individually programmed as general-purpose input pins if not used as ADC3 analog in- put. Only AN6 and AN7 can be software-configured as positive reference input. AN8 AN9 AN10 AN11 AN12 AN13 AN14 19 20 21 22 23 24 25 21 22 24 25 26 27 28 I ADC3 analog input pins INT1 7 8 I External (nonmaskable or maskable) interrupt/general-purpose input pin T1IC/CR T1PWM T1EVT 34 36 37 38 40 41 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 6 7 I/O System-reset bidirectional pin. RESET, as an input, initializes the microcontroller; as open-drain output, RESET indicates an internal failure was detected by the watchdog or oscillator fault circuit. MC 35 39 I Mode control (MC) pin. MC enables EEPROM write-protection override (WPO) mode, also EPROM VPP. XTAL2/CLKIN XTAL1 33 32 37 35 I O Internal oscillator crystal input / external clock source input Internal oscillator output for crystal VCC 8 9 Positive supply voltage for digital logic VSS 31 34 Ground reference for digital logic VCC3 9 10 Positive supply voltage for ADC3 VSS3 10 11 Ground reference for ADC3 NC — 1, 17, 23, 36 These pins have no connection to the internal die. † I = input, O = output ‡ Ports A, B, C, and D can be configured only as general-purpose I/O pins. Also, port D3 can be configured as SYSCLK. |
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