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LC72338 Datasheet(PDF) 11 Page - Sanyo Semicon Device |
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LC72338 Datasheet(HTML) 11 Page - Sanyo Semicon Device |
11 / 16 page Continued from preceding page. No. 5157-11/16 LC72336, 72338 Continued on next page. Pin No. Symbol I/O I/O type Function 39 38 37 36 S17/PE0 S18/PE1/SCK2 S19/PE2/SO2 S20/PE3/SI2 I/O CMOS 3-value output and push-pull Shared-function LCD driver segment output, general-purpose I/O, and serial I/O port The IOS instruction is used to switch between the LCD driver segment output, general- purpose I/O, and serial I/O functions, and to switch between input and output for the general-purpose input port function. • When used for segment output: The function can be specified in bit units. Segment output is specified with the IOS instruction (Pn = 0DH). b0 = S17/PE0 0 ... Segment output b1 = S18/PE1 1 ... PE0 to PE3 output b2 = S19/PE2 b3 = S20/PE3 • When used as a general-purpose I/O port: Input or output can be specified in bit units (1-bit I/O). The general-purpose I/O port function is specified with the IOS instruction (Pn = 0). b2 = SI/O2 0 ... General-purpose port 1 ... SI/O port Input or output is specified with the IOS instruction in bit units. PE ... Pn = 4 0 ... Input 1 ... Output • When used as a serial I/O port: The serial I/O port function is specified with the IOS instruction (Pn = 0). The contents of the serial I/O data buffer can be saved and loaded with the INR and OUTR instructions. Note: Pin setup states when used as a serial I/O port: PE0 ... General-purpose I/O PE1 ... SCK2 output in internal clock mode SCK2 input in external clock mode PE2 ... SO2 output PE3 ... SI2 input In clock stop mode, if this port is used as a general-purpose I/O port or as a serial I/O port, the pins go to the input disabled high-impedance state. If used for segment output, the pins are fixed at the low level. The segment output port function is selected after a power-on reset. |
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