JS48F4400P0P3C0 datasheet(116/139 Pages) NUMONYX

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Numonyx™ StrataFlash® Cellular Memory (M18)

Datasheet

April 2008

116

309823-10

Table 57: One Time Programmable (OTP) Register Information

Offset

P = 10Ah

Length

Description

Address

Hex Code

Value

(P+E)h

Number of OTP register fields in JEDEC ID space. 00h indicates

that 256 OTP fields are available.

118:

--02

(P+F)h

(P+10)h

(P+11)h

(P+12)h

OTP Field 1: OTP Description: This field describes user available

OTP register bytes. Some are preprogrammed with device-unique

serial numbers. Others are user programmable.

Bits 0 - 15 point to the OTP register Lock byte, the register’s first

byte.

The following bytes are factory preprogrammed and user-

programmable:

Bits 0 - 7 = Lock/bytes JEDEC plane physical low address.

119:

--80

80h

Bits 8 - 15 = Lock/bytes JEDEC plane physical high address.

11A:

--00

00h

Bits 16 - 23 = n where 2n equals factory preprogrammed bytes.

11B:

--03

8 byte

Bits 24 - 31 = n where 2n equals user programmable bytes.

11C:

--03

8 byte

(P+13)h

(P+14)h

(P+15)h

(P+16)h

(P+17)h

(P+18)h

(P+19)h

(P+1A)h

(P+1B)h

(P+1C)h

OTP Field 2: OTP Description

Bits 0 - 31 point to the OTP register physical Lock word address in

the JEDEC plane.

11D:

11E:

11F:

120:

--89

--00

89h

00h

The following bytes are factory or user programmable:

Bits 32 - 39 = n where n equals factory programmed groups (low

byte).

Bits 40 - 47 = n where n equals factory programmed groups

(high byte).

Bits 48 - 55 = n where 2n equals factory programmed bytes/

groups.

121:

122:

123:

--00

Bits 56 - 63 = n where n equals user programmed groups (low

byte).

Bits 64 - 71 = n where n equals user programmed groups (high

byte).

Bits 72 - 79 = n where n equals user programmable bytes/

groups.

124:

125:

126:

--10

--00

--04

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