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M37702S1BFP Datasheet(PDF) 4 Page - Mitsubishi Electric Semiconductor |
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M37702S1BFP Datasheet(HTML) 4 Page - Mitsubishi Electric Semiconductor |
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4 / 59 page  4 MITSUBISHI MICROCOMPUTERS M37702M2AXXXFP, M37702M2BXXXFP M37702S1AFP, M37702S1BFP SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Name Power supply CNVSS input Reset input Clock input Clock output Enable output Bus width selection input Analog supply input Reference voltage input I/O port P0 I/O port P1 I/O port P2 I/O port P3 I/O port P4 I/O port P5 I/O port P6 I/O port P7 I/O port P8 PIN DESCRIPTION Pin VCC, VSS CNVSS ______ RESET XIN XOUT _ E BYTE AVCC, AVSS VREF P00 – P07 P10 – P17 P20 – P27 P30 – P37 P40 – P47 P50 – P57 P60 – P67 P70 – P77 P80 – P87 Functions Supply 5 V ± 10% to VCC and 0V to VSS. This pin controls the processor mode. Connect to VSS for single-chip mode, and to VCC for external ROM types. To enter the reset state, this pin must be kept at a “L” condition which should be maintained for the required time. These are I/O pins of internal clock generating circuit. Connect a ceramic or quartz crystal resonator between XIN and XOUT. When an external clock is used, the clock source should be connected to the XIN pin and the XOUT pin should be left open. Data or instruction read and data write are performed when output from this pin is “L”. In memory expansion mode or microprocessor mode, this pin determines whether the external data bus is 8-bit width or 16-bit width. The width is 16 bits when “L” signal inputs and 8 bits when “H” signal inputs. Power supply for the A-D converter. Connect AVCC to VCC and AVSS to VSS externally. This is reference voltage input pin for the A-D converter. In single-chip mode, port P0 becomes an 8-bit I/O port. An I/O direction register is available so that each pin can be programmed for input or output. These ports are in input mode when reset. Address (A7 – A0) is output in memory expansion mode or microprocessor mode. In single-chip mode, these pins have the same functions as port P0. When the BYTE pin is set to “L” in memory expansion mode or microprocessor mode and external data bus is 16-bit width, high-order data (D15 – D8) is input or output __ when E output is “L” and an address (A15 – A8) is output when E output is “H”. If the BYTE pin is “H” that is an external data bus is 8-bit width, only address (A15 – A8) is output. In single-chip mode, these pins have the same functions as port P0. In memory expansion mode or microprocessor mode low-order data (D7 – D0) is input or __ output when E output is “L” and an address (A23 – A16) is output when E output is “H”. In single-chip mode, these pins have the same functions as port P0. In memory __ ____ _____ expansion mode or microprocessor mode, R/W, BHE, ALE and HLDA signals are output. In single-chip mode, these pins have the same functions as port P0. In memory _____ ____ expansion mode or microprocessor mode, P40 and P41 become HOLD and RDY input pin respectively. Functions of other pins are the same as in single-chip mode. In single-chip mode or memory expansion mode, port P42 can be pro- grammed for φ1 output pin divided the clock to XIN pin by 2. In microprocessor mode. P42 always has the function as φ1 output pin. In addition to having the same functions as port P0 in single-chip mode, these pins also function as I/O pins for timer A0, timer A1, timer A2 and timer A3. In addition to having the same functions as port P0 in single-chip mode, these ____ ____ pins also function as I/O pins for timer A4, external interrupt input INT0, INT1 and ____ INT2 pins, and input pins for timer B0, timer B1 and timer B2. In addition to having the same functions as port P0 in single-chip mode, these pins also function as analog input AN0 – AN7 input pins. P77 also has an A-D conversion trigger input function. In addition to having the same functions as port P0 in single-chip mode, these ____ ____ pins also function as RXD, TXD, CLK, CTS/RTS pins for UART 0 and UART 1. Input/Output Input Input Input Output Output Input Input I/O I/O I/O I/O I/O I/O I/O I/O I/O |
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