ATAM862 datasheet(95/110 Pages) ATMEL

tên linh kiện	ATAM862

Giải thích chi tiết về linh kiện	Microcontroller with UHF ASK/FSK Transmitter

PDF	110 Pages

Scroll/Zoom	100%

nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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95 / 110 page

4554E–4BMCU–05/06

ATAM862-3

Figure 24-18. FSK Modulation

24.5

Data EEPROM

The internal data EEPROM offers 2 pages of 512 bits each. Both pages are organized as 32

16-bit words. The programming voltage as well as the write cycle timing is generated on chip. To

be compatible with the ROM parts, two restrictions have to be taken into account:

• To use the same EEPROM page as with the ROM parts the application software has to write

the MCL-command “09h” to the EEPROM. This command has no effect for the

microcontroller if it is left inside the HEX-file for the ROM version.

• Data handling for read and write is performed using the serial interface MCL.

The page select is performed by either writing “01h” (page 1) or “09h” (page 0) to the EEPROM.

Figure 24-19. Data EEPROM

012340 1 23401 2 3

Counter 3

CM31

CM32

40 1 2 0 12012 0 120 1 201201 20 1 2 3

T3R

T3O

16-bit read/write buffer

Address

control

8-bit data register

EEPROM

2 x 32 x 16

HV-generator

Timing control

Mode

control

I/O

control

SCL

SDA

Page 1

Page 0

--> Write "01h"

--> Write "09h"

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