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CH421DS1.PDF CH421 datasheet. Bidirectional buffer interface chip. The CH421 supports parallel port communication, asynchronous data exchange, no need to synchronization or waiting during read/write operations. The maximum transfer speed is not less than 7Mbytes per second. It can be used for 8-bit parallel port exchange data between two MCUs. 2.1 2021-11-29
PRODUCT_GUIDE.P... Electronic selection of product selection manual, please refer to related product technical manual for more technical information. 1.4 2018-12-29