MMPF0100 datasheet(111/136 Pages) FREESCALE

111 / 136 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

111

PF0100

Functional Block Requirements and Behaviors

Control Interface I2C Block Description

7.5.5.2

Embedded Memory

There are four register banks of general purpose embedded memory to store critical data. The data written to MEMA[7:0],

MEMB[7:0], MEMC[7:0], and MEMD[7:0] is maintained by the coin cell when the main battery is deeply discharged, removed, or

contact-bounced. The contents of the embedded memory are reset by COINPORB. The banks can be used for any system need

for bit retention with coin cell backup.

Table 130. Register FABID - ADDR 0x04

Name

Bit #

R/W

Default

Description

FIN

1:0

0x00

Allows for characterizing different options within

the same reticule

Pass 1.0 = 00

FAB

3:2

0x00

Represents the wafer manufacturing facility

Pass 1.0 = 00

Unused

7:0

0x00

Unused

Table 131. Register MEMA ADDR 0x1C

Name

Bit #

R/W

Default

Description

MEMA

7:0

R/W

Memory bank A

Table 132. Register MEMB ADDR 0x1D

Name

Bit #

R/W

Default

Description

MEMB

7:0

R/W

Memory bank B

Table 133. Register MEMC ADDR 0x1E

Name

Bit #

R/W

Default

Description

MEMC

7:0

R/W

Memory bank C

Table 134. Register MEMD ADDR 0x1F

Name

Bit #

R/W

Default

Description

MEMD

7:0

R/W

Memory bank D

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