SM8213 datasheet(27/33 Pages) NPC

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SM8213AM

NIPPON PRECISION CIRCUITS—27

Decoder Set Flags

These ﬂags set the auxiliary operating modes. See

“Decoder Set Command Transfer” for a description

of each auxiliary operating mode.

Note that the start command is accepted when in

back-up, write, or BS-test mode. The start command

is not accepted in modes other than these three. Also

note that the write command is invalid in write mode.

Bits 1 to 2 and bit 8

These bits form the decoder set command.

Only one of bits 3 to 7 can be logic 1 at any given

time to select the corresponding auxiliary operating

mode. If more than one bit is 1 at any time, operation

may become unstable.

Bit 3

Break mode (command) ﬂag.

When 1, break mode operation is invoked.

Bit 4

Back-up mode (command) ﬂag.

When 1, back-up mode operation is invoked.

Bit 5

Write mode (command) ﬂag.

When 1, write mode operation is invoked.

Bit 6

BS-test mode (command) ﬂag.

When 1, BS-test mode operation is invoked.

Bit 7

Start mode (command) ﬂag.

When 1, start mode operation is invoked.

Table 8. Decoder set ﬂags

Bit

Decoder setting ﬂag

BREAK

BACK - UP

WRITE

BS - TEST

7START

SM8213 Datasheet(PDF) 27 Page - Nippon Precision Circuits Inc