Numonyx™ Embedded Flash Memory (J3 v D, Monolithic)
13.5
System Interface Information
The following device information can optimize system interface software.
Table 38: System Interface Information
Hex
Code
Offset
Length
Description
Add.
Value
VCC logic supply minimum program/erase voltage
bits 0–3 BCD 100 mV
1Bh
1
1B:
--27
--36
--00
--00
2.7 V
bits 4–7 BCD volts
V
V
V
CC logic supply maximum program/erase voltage
bits 0–3 BCD 100 mV
bits 4–7 BCD volts
1Ch
1Dh
1Eh
1
1
1
1C:
1D:
1E:
3.6 V
0.0 V
0.0 V
PP [programming] supply minimum program/erase voltage
bits 0–3 BCD 100 mV
bits 4–7 HEX volts
PP [programming] supply maximum program/erase voltage
bits 0–3 BCD 100 mV
bits 4–7 HEX volts
1Fh
20h
21h
22h
23h
24h
25h
26h
1
1
1
1
1
1
1
1
“n” such that typical single word program time-out = 2n µs
“n” such that typical max. buffer write time-out = 2n µs
“n” such that typical block erase time-out = 2n ms
1F:
20:
21:
22:
23:
24:
25:
26:
--06
--07
--0A
--00
--02
--03
--02
--00
64 µs
128 µs
1 s
“n” such that typical full chip erase time-out = 2n ms
NA
“n” such that maximum word program time-out = 2n times typical
“n” such that maximum buffer write time-out = 2n times typical
“n” such that maximum block erase time-out = 2n times typical
“n” such that maximum chip erase time-out = 2n times typical
256 µs
1024 µs
4 s
NA
13.6
Device Geometry Definition
This field provides critical details of the flash device geometry.
Table 39: Device Geometry Definition
Offset
Length
Description
Code See Table Below
27h
1
“n” such that device size = 2n in number of bytes
27:
x8/
x16
28h
2
Flash device interface: x8 async x16 async x8/x16 async
28:
--02
28:00,29:00 28:01,29:00 28:02,29:00
29:
2A:
2B:
--00
--05
--00
2Ah
2
“n” such that maximum number of bytes in write buffer = 2n
32
Number of erase block regions within device:
1. x = 0 means no erase blocking; the device erases in “bulk”
2. x specifies the number of device or partition regions with one or more
contiguous same-size erase blocks
3. Symmetrically blocked partitions have one blocking region
4. Partition size = (total blocks) x (individual block size)
2Ch
2Dh
1
4
2C:
--01
1
Erase Block Region 1 Information
2D:
2E:
2F:
30:
bits 0–15 = y, y+1 = number of identical-size erase blocks
bits 16–31 = z, region erase block(s) size are z x 256 bytes
December 2007
316577-06
Datasheet
61
NUMONYX [ NUMONYX B.V ]
