AT945 ATMEL Corporation, AT945 Datasheet - Page 8

• Manufacturer Part Number: AT945
• Description: Secure 5K - 40K Gates of At40k FPGA with 8-bit Microcontroller,up to 36 Kbytes of SRAM and On-chip Program Storage Eeprom
• Manufacturer: ATMEL Corporation

8
Programming Summary:
Read from Whole Device
AT94S Secure Family
Low-power (Standby)
Send Device Address
Send Device Address
BYTE_COUNT
Send Start Condition
Send Start condition
EEPROM Address
EEPROM Address
Sent Stop Condition
EEPROM Address
BYTE_COUNT+1
SER_EN
SER_EN
Read Data Byte
BYTE_COUNT
Middle Byte
Send MSB of
Send LSB of
Send ACK
START
($A7)
($A6)
END
High
Low
(2)
0
(1)
(1)
Yes
Yes
Yes
Yes
Yes
Yes
No
BYTE_COUNT=
TT_BYTE?
ACK?
ACK?
ACK?
ACK?
ACK?
No
No
No
No
No
Notes:
EEPROM Address is Defined as:
AT17LV010
TT_BYTE
AT17LV010
1. The 1-Mbit part requires three EEPROM address
2. Data byte received/sent LSB to MSB
bytes; all three bytes must be individually ACK’d by
the EEPROM.
cSCK
cSDA
cSCK
cSDA
cSCK
cSDA
cSCK
cSDA
START CONDITION
STOP CONDITION
SAMPLE DATA BIT
ACK BIT
ACK
2314D–FPSLI–2/04
00 00 00 \h
131072 \d