參數(shù)資料
型號(hào): ISL1220
廠商: Intersil Corporation
英文描述: Low Power RTC with 8 Bytes of Battery Backed SRAM and Separate FOUT(具有電池供電的8位SRAM和獨(dú)立輸出的低功率RTC)
中文描述: 低功耗RTC與8電池供電SRAM和獨(dú)立的FOUT(具有電池供電的8位的SRAM和獨(dú)立輸出的低功率實(shí)時(shí)時(shí)鐘字節(jié))
文件頁(yè)數(shù): 15/20頁(yè)
文件大小: 328K
代理商: ISL1220
15
FN6315.0
June 22, 2006
receiver pulls the SDA line LOW to acknowledge the
reception of the eight bits of data (See Figure 13).
The ISL1220 responds with an ACK after recognition of a
START condition followed by a valid Identification Byte, and
once again after successful receipt of an Address Byte. The
ISL1220 also responds with an ACK after receiving a Data
Byte of a write operation. The master must respond with an
ACK after receiving a Data Byte of a read operation.
FIGURE 12. VALID DATA CHANGES, START AND STOP CONDITIONS
FIGURE 13. ACKNOWLEDGE RESPONSE FROM RECEIVER
FIGURE 14. BYTE WRITE SEQUENCE
SDA
SCL
START
DATA
STABLE
DATA
CHANGE
STOP
DATA
STABLE
SDA OUTPUT FROM
TRANSMITTER
SDA OUTPUT FROM
RECEIVER
8
1
9
START
ACK
SCL FROM
MASTER
HIGH IMPEDANCE
HIGH IMPEDANCE
S
T
A
R
T
S
T
O
P
IDENTIFICATION
BYTE
DATA
BYTE
A
C
K
SIGNALS FROM
THE MASTER
SIGNALS FROM
THE ISL1220
A
C
K
1
0
0
1
1
A
C
K
WRITE
SIGNAL AT SDA
0 0 0 0
1 1 1
ADDRESS
BYTE
ISL1220
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