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SE370C722 Datasheet(PDF) 2 Page - Texas Instruments |
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SE370C722 Datasheet(HTML) 2 Page - Texas Instruments |
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2 / 60 page  TMS370Cx2x 8-BIT MICROCONTROLLER SPNS018C – FEBRUARY 1993 – REVISED FEBRUARY 1997 2 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Pin Descriptions PIN † NAME DIP (40) PLCC (44) TYPE† DESCRIPTION A0 A1 A2 A3 A4 A5 A6 A7 18 17 16 15 14 13 11 10 20 19 18 17 16 15 13 12 I/O Port A pins are general-purpose bidirectional I/O ports. B0 B1 B2 B3 B4 B5 B6 B7 39 40 1 2 3 23 24 25 44 1 2 3 4 26 27 28 I/O Port B pins are general-purpose bidirectional I/O ports. C0 4 5 I/O Port C pin is a general-purpose bidirectional I/O port. D3 D4 D5 D6 D7 21 20 35 22 19 23 22 40 24 21 I/O Port D pins are general-purpose bidirectional I/O ports. D3 is also configurable as SYSCLK. INT1 INT2 INT3 6 7 8 7 8 9 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 31 30 29 36 35 34 I/O Timer 1 input-capture/counter-reset input pin/general-purpose bidirectional pin Timer 1 pulse width modulation output pin/general-purpose bidirectional pin Timer 1 external event-input pin/general-purpose bidirectional pin SPISOMI SPISIMO SPICLK 28 27 26 32 31 30 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 SCITXD SCIRXD SCICLK 38 37 36 43 42 41 I/O SCI transmit data output pin/general-purpose bidirectional pin‡ SCI receive data input pin/general-purpose bidirectional pin SCI bidirectional serial clock pin/general-purpose bidirectional pin RESET 5 6 I/O System reset bidirectional pin; as input, RESET initializes microcontroller; as open-drain output, RESET indicates an internal failure was detected by the watchdog or oscillator fault circuit. MC 34 39 I Mode control-input pin. MC enables the EEPROM write-protection override (WPO) mode and 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 9 10 Positive supply voltage VSS 12 14 Ground reference NC – – – – 11 25 29 33 No connections † I = input, O = output ‡ The three-pin configuration SCI is referred to as SCI1. |
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