April 2011
Intermediate to advanced
312 pages
9h 32m
English
Content preview from Interfacing PIC Microcontrollers
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Serial Communication
215
The test program reads and writes every location (16384 addresses) by this
method. The maximum write cycle time specified is 5 ms (16384 ⫻ 0.005 ⫽
82 s). It therefore takes a considerable time to complete this test. If the memory
is being accessed sequentially, as is frequently the case, the overall access time
can be reduced by using the page read and address auto-increment features of
the chip, which are explained in the EEPROM data sheet.
In the test software (Program 9.5), the control operations are broken down
as much as possible so that each step can be identified. The program outline
(Figure 9.8) shows that the data write ...