AT88SC25616C-SU Atmel, AT88SC25616C-SU Datasheet - Page 53
![IC EEPROM 256KBIT 1.5MHZ 8SOIC](/photos/6/50/65032/453-8-soic_sml.jpg)
AT88SC25616C-SU
Manufacturer Part Number
AT88SC25616C-SU
Description
IC EEPROM 256KBIT 1.5MHZ 8SOIC
Manufacturer
Atmel
Series
CryptoMemory®r
Specifications of AT88SC25616C-SU
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
256K (32K x 8)
Speed
5MHz
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
For Use With
AT88SC-SDK1 - KIT TUEMA DK CRYPTOMEM SMARTCARDAT88SC-DK1 - KIT DEV FOR AT88SCXXXXC FAMILY
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
AT88SC25616C-SU C0090
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT88SC25616C-SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
9.4.7. System READ: $B6
52
Functional
Figure 28. System READ Command Functional Description
The System Read command allows reading of the system data from the device. Depending on the value of the P1
parameter, the host may read the data in the configuration memory, the fuses, or a checksum.
Table 42. System READ Command Detail
Read Config Zone
To read 256-bytes, the host should set N = $00. This is true for any outgoing command, and is defined by ISO 7816-3.
If the address provided at P2 is an unauthorized address, the device will return the "Command Unauthorized" code
($69 $00) after it has received the header. Since access rights vary throughout the configuration memory, the host may
provide an authorized starting address, but a number of bytes N that causes the device to reach unauthorized address.
In this case, the device will transmit the authorized bytes, but unauthorized bytes will be replaced by the "fuse byte"
(see below). At the end of this command the "Command Unauthorized" code ($69 $00) will be returned instead of $90
$00 to indicate that some of the bytes returned were not valid.
Read Fuse Byte
Fuse data is returned in the form of a single byte. Bits zero to three represent the fuse states; a value of ‘0’ indicates
the fuse has been blown. Bits four to seven are not used as Security Fuses and are reserved by Atmel
Table 43. Fuse Byte Definition
Atmel AT88SC0104/0204/0404/0808/1616/3216/6416/12816/25616C
Read Config Zone
Read Fuse Byte
Read Checksum
resv
F
7
resv
Number of bytes N
F
Read Command
6
Address P1
Address P2
Command
Host
resv
F
5
resv
Device
F
Data
Data
4
…
SEC
F
CLA
3
$00
$00
$00
N data bytes
$B6
$B6
$B6
INS
PER
F
2
$00
$01
$02
P1
CMA
F
1
addr
$00
$00
®
P2
.
5211C–SMIC–01/10
FAB
F
$01
$02
0
P3
N