Serial flash memory controller, serial flash memory and execution method thereof

Abstract

The invention relates to a serial flash memory controller, a serial flash memory and an execution method thereof. The serial flash memory controller and the serial flash memory are connected via a serial clock line, a plurality of serial input / output lines and a latching line, and the serial clock line conveys a serial clock from the serial flash memory controller to the serial flash memory. The execution method of the serial flash memory controller and the serial flash memory comprises the steps of synchronously sending data bits and a latching signal generated by a memorizer to the serial flash memory controller from the serial flash memory via the serial input / output lines, and permitting the serial flash memory controller to utilize the latching signal generated by the memorizer to substitute the serial clock to thereby latch the data bits received by the serial input / output lines. The invention provides the serial flash memory controller, the serial flash memory and the execution method thereof, so that the sending of information bits between the serial flash memory controller and the serial flash memory can be synchronized.

Description

technical field

[0001] The present invention relates to serial flash memory, and in particular to serial flash memory utilizing latch lines to facilitate synchronization. Background technique

[0002] Compared with parallel flash, serial flash generally has fewer pins, occupies less area on a printed circuit board (PCB), consumes less power, is easier to control, and Can reduce the cost of the whole system. Therefore, serial flash memory is widely used in various electronic devices, including portable electronic devices, such as mobile phones, desktop personal computers, portable multimedia players, handheld game consoles, or other devices.

[0003] Generally, a serial clock provided by a serial flash controller (serial flash controller) synchronizes the communication between the controller and the serial flash memory. Theoretically, the commands, addresses and data sent by the controller to the memory should be well-aligned with the serial clock to ensure that the memory ...

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