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TMS370C150A Datasheet(PDF) 2 Page - Texas Instruments |
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TMS370C150A Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 77 page  TMS370Cx5x 8-BIT MICROCONTROLLER SPNS010F – DECEMBER 1986 – REVISED FEBRUARY 1997 2 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Pin Descriptions PIN † ‡ NAME ALTERNATE FUNCTION SDIP (64) LCC (68) I/O† DESCRIPTION‡ A0 A1 A2 A3 A4 A5 A6 A7 DATA0 DATA1 DATA2 DATA3 DATA4 DATA5 DATA6 DATA7 15 16 17 18 19 20 21 22 17 18 19 20 21 22 23 24 I/O Single-chip mode: Port A is a general-purpose bidirectional I/O port. Expansion mode: Port A can be individually programmed as the external bidirectional data bus (DATA0 – DATA7). B0 B1 B2 B3 B4 B5 B6 B7 ADDR0 ADDR1 ADDR2 ADDR3 ADDR4 ADDR5 ADDR6 ADDR7 60 61 62 63 64 1 2 3 65 66 67 68 1 2 3 4 I/O Single-chip mode: Port B is a general-purpose bidirectional I/O port. Expansion mode: Port B can be individually programmed as the low-order address output bus (ADDR0 – ADDR7). C0 C1 C2 C3 C4 C5 C6 C7 ADDR8 ADDR9 ADDR10 ADDR11 ADDR12 ADDR13 ADDR14 ADDR15 4 6 7 9 10 11 12 13 5 7 8 10 11 12 13 14 I/O Single-chip mode: Port C is a general-purpose bidirectional I/O port. Expansion mode: Port C can be individually programmed as the high-order address output bus (ADDR8 – ADDR15). INT1 INT2 INT3 NMI — — 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 AN1 AN2 AN3 AN4 AN5 AN6 AN7 E0 E1 E2 E3 E4 E5 E6 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 individually programmed 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. 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 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 † 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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