ATA8742 ATMEL Corporation, ATA8742 Datasheet - Page 191

• Manufacturer Part Number: ATA8742
• Manufacturer: ATMEL Corporation

28.8.5
28.8.6
28.8.7
28.8.8
28.8.9
28.8.10
9151A–INDCO–07/09
Programming the EEPROM
Reading the Flash
Reading the EEPROM
Programming and Reading the Fuse and Lock Bits
Reading the Signature Bytes and Calibration Byte
Power-off sequence
The EEPROM is organized in pages, see
EEPROM, the data is latched into a page buffer. This allows one page of data to be pro-
grammed simultaneously. The programming algorithm for the EEPROM Data memory is as
follows (refer to
1. Load Command “Write EEPROM”.
2. Load EEPROM Page Buffer.
3. Program EEPROM Page. Wait after Instr. 2 until SDO goes high for the “Page Program-
4. Repeat 2 through 3 until the entire EEPROM is programmed or until all data has been
5. End Page Programming by Loading Command “No Operation”.
The algorithm for reading the Flash memory is as follows (refer to
1. Load Command "Read Flash".
2. Read Flash Low and High Bytes. The contents at the selected address are available at
The algorithm for reading the EEPROM memory is as follows (refer to
192):
1. Load Command “Read EEPROM”.
2. Read EEPROM Byte. The contents at the selected address are available at serial output
The algorithms for programming and reading the Fuse Low/High bits and Lock bits are shown in
Table 28-15 on page
The algorithms for reading the Signature bytes and Calibration byte are shown in
page
Set SCI to “0”. Set RESET to “1”. Turn V
ming” cycle to finish.
programmed.
serial output SDO.
SDO.
192.
Table 28-15 on page
192.
192):
CC
power off.
Table 29-8 on page
202. When programming the
Table 28-15 on page
Table 28-15 on page
ATA8742
Table 28-15 on
192):
191