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參數資料

型號：	LC74201JE
元件分類：	消費家電
英文描述：	SPECIALTY CONSUMER CIRCUIT, PQFP128
封裝：	QFP-128
文件頁數：	9/21頁
文件大小：	301K
代理商：	LC74201JE

Address/data write timing

Data read timing

2. Serial interface

The serial interface uses the following three input pins and one output pin.

CE pin (pin 43: input): Serial enable signal input

CL pin (pin 44: input): Serial clock signal input

DO pin (pin 45: output): Serial data output

DI pin (pin 46: input) Serial data input

Data transfer is active while the CE pin is high level. Data transfer proceeds in LSB to first order. Data input is

synchronized with the rising edge of the clock. Data output is synchronized with the falling edge of the clock.

Notes: Do not write command or other data to the serial data input pin while the LSI is writing data. The serial data

output pin is in the high impedance state during data input.

Address and data transfer procedures

The command address is assigned to the lowest seven bits of the address. The most significant bit (AD7) is used to

specify write or read. The address can only be written. It cannot be read.

Data transfer proceeds in LSB to first order.

Address input and data I/O are valid while the CE pin (pin 43) is high level.

Supply the serial data input clock to the CL pin (pin 44). The LSI reads and writes data in synchronization with the

rising edge of the serial clock signal.

No. 5761-17/21

LC74201JE

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