Users Manual Part 2

SIM8260A_Hardware Design_V1.05
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3.12 SPI Interface
SIM8260A SPI interface only supports master mode, data rate up to 50MHz. Usually, SPI interface is used
to connect ROM or LCD and other devices. The SPI reference circuit is shown as follows:
Figure 36: SPI reference circuit
Table 40: Definition of SPI interface
Pin name
Pin no.
Electrical
description
description
Comment
SPI_CS_N
D18
DO
SPI chip select
SPI_CLK
D20
DO
SPI clock
SPI_MOSI
D14
DO
Master output slaver input
SPI_MISO
D16
DI
Master input slaver output