CPU Supervisor with Nonvolatile Memory and

Programmable I/O

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Chip Topology

TRANSISTOR COUNT: 16559

SUBSTRATE CONNECTED TO GROUND

Package Information

For the latest package outline information, go to

S

P

Sr

A

N

START

8-BITS ADDRESS OR DATA

REPEATED

START

STOP

ACK

NOT

ACK

WHITE BOXES INDICATED THE MASTER IS

CONTROLLING SDA

SHADED BOXES INDICATED THE SLAVE IS

CONTROLLING SDA

WRITE A SINGLE BYTE

WRITE UP TO AN 8-BYTE PAGE WITH A SINGLE TRANSACTION

READ A SINGLE BYTE WITH A DUMMY WRITE CYCLE TO MOVE THE ADDRESS COUNTER

READ MULTIPLE BYTES WITH A DUMMY WRITE CYCLE TO MOVE THE ADDRESS COUNTER

COMMUNICATIONS KEY

S

XX

XX

XX

XX

10

10

A

MEMORY ADDRESS

A

DATA

A

P

S

10

10

A

MEMORY ADDRESS

A

DATA

A

DATA

A

P

S

10

10

A

MEMORY ADDRESS

A

Sr

10

1

0

0

A

DATA

N

P

S

10

10

A

MEMORY ADDRESS

A

Sr

10

1

0

0

0 A

0

1

A

DATA

A

DATA

A

DATA

A

DATA

N

P

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.