资料介绍
Systems requiring embedded control are becoming
more and more sophisticated, with microcontrollers
required to control these systems increasing in
complexity. Many microcontrollers today are being
designed with built-in serial communication capability
to be able to easily access other features that are not
built in to the microcontroller itself. Devices like
EEPROMs, A/Ds, D/As, LCDs etc. are all being built
with a serial interface to reduce cost, size, pin count,
and board area. There are many different serial
interfaces on the market used to interface peripherals
(I
2
C
, Microwire
, SPI, for example). One of the serial
interfaces that is gaining in popularity is SPI (Serial
Peripheral Interface). It is becoming more popular
because of its communication speed, simultaneous
full-duplex communication, and ease of programming. AN613
Using Microchip 93 Series Serial EEPROMs with Microcontroller SPI Ports
to make sure it writes (polling ready/busy pin to verify
Author: Keith Pazul write cycle completion) and reads properly. A
Memory and ASSP Division schematic (Figure 2) is included in this application note
to describe exactly how the 93LC56/66 was connected
to the microcontroller.
INTRODUCTION
Systems requiring embedded control
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