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参数资料
| 型号： | SMS8198SA |
| 厂商： | Summit Microelectronics, Inc. |
| 英文描述： | Philips TriMedia⑩ Processor Companion Supervisor With a 16K-bit 2-wire Serial Memory |
| 中文描述： | ⑩飞利浦代TriMedia处理器伴侣监凭借16K的位2线串行存储器 |
| 文件页数： | 7/14页 |
| 文件大小： | 84K |
| 代理商： | SMS8198SA |
7
2036 5.0 4/18/00
SMS8198
Figure 6. Page/Byte WRITE Mode
WRITE OPERATIONS
The SMS8198 allows two types of write operations: byte
write and page write. The byte write operation writes a
single byte during the nonvolatile write period (t
WR
). The
page write operation allows up to 16 bytes in the same
page to be written during t
WR
.
Byte WRITE
After the slave address is sent (to identify the slave
device, specify high order word address and a read or
write operation), a second byte is transmitted which
contains the low 8 bit addresses of any one of the 2,048
words in the array.
Upon receipt of the word address, the SMS8198 re-
sponds with an ACKnowledge. After receiving the next
byte of data, it again responds with an ACKnowledge. The
master then terminates the transfer by generating a
STOP condition, at which time the SMS8198 begins the
internal write cycle.
While the internal write cycle is in progress, the SMS8198
inputs are disabled, and the device will not respond to any
requests from the master. Refer to Figure 6 for the
address, ACKnowledge and data transfer sequence.
Page WRITE
The SMS8198 is capable of a 16-byte page write opera-
tion. It is initiated in the same manner as the byte-write
operation, but instead of terminating the write cycle after
the first data word, the master can transmit up to 15 more
words of data. After the receipt of each word, the
SMS8198 will respond with an ACKnowledge.
The SMS8198 automatically increments the address for
subsequent data words. After the receipt of each word,
the four low order address bits are internally incremented
by one. The high order five bits of the address byte remain
constant. Should the master transmit more than sixteen
words, prior to generating the STOP condition, the ad-
dress counter will
“
roll over,
”
and the previously written
data will be overwritten. As with the byte-write operation,
all inputs are disabled during the internal write cycle.
Refer to Figure 6 for the address, ACKnowledge and data
transfer sequence.
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
D
7
D
5
D
6
D
4
D
0
D
3
D
2
D
1
S
T
A
R
T
Word Address
Data Byte n
Data Byte n+15
S
T
O
P
A
C
K
Acknowledges Transmitted from
SMS8198 to Master Receiver
Slave Address
Device
Type
Address
Read/Write
0= Write
A10,A9,A8
SDA
Bus
Activity
A
C
K
A
C
K
Master Sends Read
Request to Slave
Master Writes Word
Address to Slave
1 0 1 0
0
Data Byte n+1
A
C
K
Master Writes
Data to Slave
Master Transmitter
to
Slave Receiver
Slave Transmitter
to
Master Receiver
Slave Transmitter
to
Master Receiver
Master Transmitter
to
Slave Receiver
Master Transmitter
to
Slave Receiver
Shading Denotes
SMS8198
SDA Output Active
Master Transmitter
to
Slave Receiver
Slave Transmitter
to
Master Receiver
Slave Transmitter
to
Master Receiver
Master Transmitter
to
Slave Receiver
Slave Transmitter
to
Master Receiver
Master Writes
Data to Slave
Master Writes
Data to Slave
Acknowledges Transmitted from
SMS8198 to Master Receiver
If single byte-write only,
Stop bit issued here.
A
10
A
9
R
W
A
C
K
A
8
2036 ILL8.0
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相关代理商/技术参数 |
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| SMS8198SB | 制造商:SUMMIT 制造商全称:SUMMIT 功能描述:Philips TriMedia⑩ Processor Companion Supervisor With a 16K-bit 2-wire Serial Memory |
| SMS840 | 制造商:SECOS 制造商全称:SeCoS Halbleitertechnologie GmbH 功能描述:0.13A , 50V , RDS(ON) 10 P-Channel Enhancement MOSFET |
| SMS9CH-2Z17 | 制造商:SOURIAU 功能描述:Conn Qikmate HDR 9 POS 5.08mm Solder ST Thru-Hole |
| SMS9CSB1 | 功能描述:集管和线壳 Protection Shroud 9P Pnl Mnt Pin Recpt RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector |
| SMS9GE3 | 制造商:SOURIAU 功能描述:SOCKET PCB 9WAY 制造商:Souriau 功能描述:Conn Qikmate F 9 POS 5.08mm Solder ST Thru-Hole |
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