DS4510 Datasheet, PDF (12/12 Pages) Maxim Integrated Products – CPU Supervisor with Nonvolatile Memory and Programmable I/O

CPU Supervisor with Nonvolatile Memory and
Programmable I/O
COMMUNICATIONS KEY
S START
A ACK
P STOP
NOT
N _ACK
WHITE BOXES INDICATED THE MASTER IS
CONTROLLING SDA
SHADED BOXES INDICATED THE SLAVE IS
CONTROLLING SDA
Sr
REPEATED
START
X X X X X X X X 8-BITS ADDRESS OR DATA
NOTES:
1) ALL BYTES ARE SENT MOST SIGNIFICANT
BIT FIRST.
2) THE FIRST BYTE SENT AFTER A START
CONDITION IS ALWAYS THE SLAVE ADDRESS
FOLLOWED BY THE READ/WRITE BIT.
WRITE A SINGLE BYTE
S 1 0 1 0 0 0 A0 0 A MEMORY ADDRESS
A
DATA
AP
WRITE UP TO AN 8-BYTE PAGE WITH A SINGLE TRANSACTION
S 1 0 1 0 0 0 A0 0 A MEMORY ADDRESS
A
DATA
A
READ A SINGLE BYTE WITH A DUMMY WRITE CYCLE TO MOVE THE ADDRESS COUNTER
S 1 0 1 0 0 0 A0 0 A MEMORY ADDRESS
A Sr 1 0 1 0 0 0 A0 1 A
READ MULTIPLE BYTES WITH A DUMMY WRITE CYCLE TO MOVE THE ADDRESS COUNTER
S 1 0 1 0 0 0 A0 0 A MEMORY ADDRESS
A Sr 1 0 1 0 0 0 A ₀ 1 A
DATA
AP
DATA
NP
DATA
A
DATA
A
DATA
A
DATA
NP
Figure 7. I²C Communications Examples
Chip Topology
TRANSISTOR COUNT: 16559
SUBSTRATE CONNECTED TO GROUND
Package Information
For the latest package outline information, go to
www.maxim-ic.com/DallasPackInfo.
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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