參數(shù)資料
型號(hào): X4165V8I-2.7
廠商: INTERSIL CORP
元件分類: 電源管理
英文描述: CPU Supervisor with 16K EEPROM
中文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8
封裝: PLASTIC, MO-153AC, TSSOP-8
文件頁(yè)數(shù): 13/23頁(yè)
文件大?。?/td> 118K
代理商: X4165V8I-2.7
X46402
Characteristics subject to change without notice.
13 of 23
No-Password Sequential Read
The host can read sequentially within the un-protected
area of the array after receiving the No-password
Command and an address within the unprotected
address space. The data output is sequential, with the
data from address n followed by the data from n+1.
The address counter for read operations increments all
address bits, allowing the entire un-protected memory
array contents to be serially read during one operation.
At the end of the address space (address 1FFFh) the
device goes into an idle state and a new read
sequence must be initiated to continue reading at
another address. Refer to Figure 16 for the address,
acknowledge and data transfer sequence. An acknowl-
edge must follow each 8-bit data transfer. After the last
bit has been read, the host sends a stop condition with
or without a preceding acknowledge.
COMBINED RANDOM/SEQUENTIAL OPERATIONS
A random read and sequential read can be combined,
however there are some limitations. Both password
protected or non-password operations operate in the
same way. After sending a random read command and
reading the first byte, continued clocks will return suc-
cessive addresses. However, after more than one byte
of data is returned, it is not possible to initiate a new
random read, without issuing a stop and starting a new
command. This also allows multiple random read oper-
ations and a sequential read operation, as long as the
last operation is sequential. Note: A read operation
that includes a random read of the last byte in the
memory or OTP arrays cannot include a sequential
read operation.
Figure 13. Password Protected Random Read
Figure 14. Password Protected Sequential Read
S
A
S
A
A
A
A
A
A
A
A
Data 0
S
S
S
Command
A
A
A
A
Read
Password
7
Read
Password
0
S
SDA
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Data 0
Wait t
WC
OR
Repeated
S
ACK Polling
Command
A
S
ACK Polling
Command
N
If ACK, then
Password Matches
Password
Data X
A
S
S
Command
A
A
A
A
Read
Password
7
Read
Password
0
S
SDA
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Data 0
If ACK, then
Password Matches
Wait t
WC
OR
Repeated
S
ACK Polling
Command
A
S
ACK Polling
Command
N
S
Password
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