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M34553MXH-XXXFP Datasheet(PDF) 5 Page - Renesas Technology Corp |
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M34553MXH-XXXFP Datasheet(HTML) 5 Page - Renesas Technology Corp |
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5 / 145 page  Rev.3.02 Dec 22, 2006 page 5 of 142 REJ03B0024-0302 4553 Group PIN DESCRIPTION Name Power supply Ground CNVSS Reset input/output Main clock input Sub-clock input Pin VDD VSS CNVSS RESET XIN XCIN Input/Output — — — I/O Input Input Function Connected to a plus power supply. Connected to a 0 V power supply. Connect CNVSS to VSS and apply “L” (0V) to CNVSS certainly. An N-channel open-drain I/O pin for a system reset. When the SRST instruction, watchdog timer, the built-in power-on reset or the voltage drop detection circuit causes the system to be reset, the RESET pin outputs “L” level. I/O pins of the main clock generating circuit. When using a ceramic resonator, con- nect it between pins XIN and XOUT. A feedback resistor is built-in between them. When using the RC oscillation, connect a resistor and a capacitor to XIN, and leave XOUT pin open. I/O pins of the sub-clock generating circuit. Connect a 32.768 kHz quartz-crystal oscilla- tor between pins XCIN and XCOUT. A feedback resistor is built-in between them. XCIN and XCOUT pins are also used as ports D6 and D7, respectively. XOUT Main clock output Output D0–D5 D6, D7 P00–P03 P10–P13 P20–P23 Port C COM0– COM3 SEG0–SEG28 CNTR INT I/O port D Input is examined by skip decision. Output port D I/O port P0 I/O port P1 I/O port P2 Output port C Common output Segment output Timer input/output Interrupt input I/O Output I/O I/O I/O Output Output Output I/O Input Each pin of port D has an independent 1-bit wide I/O function. The output structure can be switched to N-channel open-drain or CMOS by software. For input use, set the latch of the specified bit to “1” and select the N-channel open-drain. Port D5 is also used as INT pin. Each pin of port D has an independent 1-bit wide output function. The output struc- ture is N-channel open-drain. Ports D6 and D7 are also used as XCIN pin and XCOUT pin, respectively. Port P0 serves as a 4-bit I/O port. The output structure can be switched to N-channel open-drain or CMOS by software. For input use, set the latch of the specified bit to “1” and select the N-channel open-drain. Port P0 has a key-on wakeup function and a pull-up function. Both functions can be switched by software. Ports P00–P03 are also used as SEG21–SEG24, respectively. Port P1 serves as a 4-bit I/O port. The output structure can be switched to N-channel open-drain or CMOS by software. For input use, set the latch of the specified bit to “1” and select the N-channel open-drain. Port P1 has a key-on wakeup function and a pull-up function. Both functions can be switched by software. Ports P10–P13 are also used as SEG25–SEG28, respectively. Port P2 serves as a 4-bit I/O port. The output structure can be switched to N-channel open-drain or CMOS by software. For input use, set the latch of the specified bit to “1” and select the N-channel open-drain. Ports P20–P23 are also used as SEG17–SEG20, respectively. 1-bit output port. The output structure is CMOS. Port C is also used as CNTR pin. LCD common output pins. Pins COM0 and COM1 are used at 1/2 duty, pins COM0– COM2 are used at 1/3 duty and pins COM0–COM3 are used at 1/4 duty. LCD segment output pins. SEG0–SEG2 pins are used as VLC3–VLC1 pins, respec- tively. SEG17–SEG28 pins are used as Ports P20–P23, Ports P00–P03 and Ports P10–P13, respectively. CNTR pin has the function to input the clock for the timer 1 event counter and to out- put the PWM signal generated by timer 2.CNTR pin is also used as Port C. INT pin accepts external interrupts. They have the key-on wakeup function which can be switched by software. INT pin is also used as Port D5. Notes 1: Pins except above have just single function. 2: The input/output of D5 can be used even when INT is selected. The threshold value is different between port D5 and INT. Accordingly, be careful when the input of both is used. 3: The port C “H” output function can be used even when CNTR (output) is selected. Pin XCIN XCOUT P00 P01 P02 P03 P10 P11 P12 P13 Multifunction D6 D7 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 MULTIFUNCTION Pin D6 D7 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 Multifunction XCIN XCOUT P00 P01 P02 P03 P10 P11 P12 P13 Pin P20 P21 P22 P23 D5 C SEG0 SEG1 SEG2 Multifunction SEG17 SEG18 SEG19 SEG20 INT CNTR VLC3 VLC2 VLC1 Pin SEG17 SEG18 SEG19 SEG20 INT CNTR VLC3 VLC2 VLC1 Multifunction P20 P21 P22 P23 D5 C SEG0 SEG1 SEG2 XCOUT Sub-clock output Output |
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