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MAX16068 Datasheet(PDF) 28 Page - Maxim Integrated Products

Part # MAX16068
Description  6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX16068 Datasheet(HTML) 28 Page - Maxim Integrated Products

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28 _____________________________________________________________________________________
6-Channel, Flash-Configurable System Manager
with Nonvolatile Fault Registers
9) The slave sends an 8-bit data byte.
10) The master asserts a NACK on SDA.
11) The master sends a STOP condition.
If the memory address is not valid, it is NACKed by the
slave at step 5 and the address pointer is not modified.
When PEC is enabled, the Read Byte protocol becomes:
1) The master sends a START condition.
2) The master sends the 7-bit slave ID plus a write bit
(low).
3) The addressed slave asserts an ACK on the data
line.
4) The master sends 8 data bits.
5) The active slave asserts an ACK on the data line.
6) The master sends a REPEATED START condition.
7) The master sends the 7-bit slave ID plus a read bit
(high).
8) The addressed slave asserts an ACK on the data
line.
9) The slave sends 8 data bits.
10) The master asserts an ACK on the data line.
11) The slave sends an 8-bit PEC byte.
12) The master asserts a NACK on the data line.
13) The master generates a STOP condition.
Block Write
The block write protocol (see Figure 9) allows the master
device to write a block of data (1–16 bytes) to memory.
Preload the destination address by a previous send byte
command; otherwise the block write command begins to
write at the current address pointer. After the last byte
is written, the address pointer remains preset to the
next valid address. If the number of bytes to be written
causes the address pointer to exceed 8Fh for configura-
tion registers or configuration flash or FFh for user flash,
the address pointer stays at 8Fh or FFh, respectively,
overwriting this memory address with the remaining
bytes of data. The slave generates a NACK at step 5 if
the command code is invalid or if the device is busy, and
the address pointer is not altered.
The block write procedure is as follows:
1) The master sends a START condition.
2) The master sends the 7-bit slave address and a
write bit (low).
3) The addressed slave asserts an ACK on SDA.
4) The master sends the 8-bit command code for block
write (94h).
5) The addressed slave asserts an ACK on SDA.
6) The master sends the 8-bit byte count (1 byte to 16
bytes), n.
7) The addressed slave asserts an ACK on SDA.
8) The master sends 8 bits of data.
9) The addressed slave asserts an ACK on SDA.
10) Repeat steps 8 and 9 n - 1 times.
11) The master sends a STOP condition.
When PEC is enabled, the Block Write protocol becomes:
1) The master sends a START condition.
2) The master sends the 7-bit slave ID plus a write bit
(low).
3) The addressed slave asserts an ACK on the data
line.
4) The master sends 8 bits of the block write command
code.
5) The slave asserts an ACK on the data line.
6) The master sends 8 bits byte count (min 1, max 16) n.
7) The slave asserts an ACK on the data line.
8) The master sends 8 bits of data.
9) The slave asserts an ACK on the data line.
10) Repeat 8 and 9 n - 1 times.
11) The master sends an 8-bit PEC byte.
12) The slave asserts an ACK on the data line (if PEC is
good, otherwise NACK).
13) The master generates a STOP condition.
Block Read
The block read protocol (see Figure 9) allows the master
device to read a block of up to 16 bytes from memory.
Read fewer than 16 bytes of data by issuing an early
STOP condition from the master, or by generating a
NACK with the master. The destination address should
be preloaded by a previous send byte command;
otherwise, the block read command begins to read at
the current address pointer. If the number of bytes to
be read causes the address pointer to exceed 8Fh for
the configuration register or configuration flash or FFh
in user flash, the address pointer stays at 8Fh or FFh,
respectively.


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