SC18IM700IPW PHILIPS [NXP Semiconductors], SC18IM700IPW Datasheet - Page 7

• Manufacturer Part Number: SC18IM700IPW
• Description: Master I-2C - bus controller with UART interface
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
SC18IM700_1
Product data sheet
7.1.8 Repeated START: write after write
7.1.9 Power-down mode
The SC18IM700 also supports ‘write after write’ command as specified in the Philips’
I
without having to issue a STOP condition between the two commands.
The host issues a write command as normal, then immediately issues a second write
command without sending a STOP (P) character after the first write command.
The SC18IM700 can be placed in a low-power mode. In this mode the internal oscillator is
stopped and SC18IM700 will no longer respond to the host messages. Enter the
Power-down mode by sending the power-down character Z (0x5A) followed by the two
defined bytes, which are 0x5A and followed by 0xA5. If the exact message is not received,
the device will not enter the power-down state.
Upon entering the power-down state, SC18IM700 places the WAKEUP pin in a HIGH
state. To have the device leave the power-down state, the WAKEUP pin should be brought
LOW. A 1 k resistor must be connected between the WAKEUP pin and V
2
Fig 9. Repeated START: read after write
Fig 10. Repeated START: write after write
Fig 11. Power-down mode
C-bus specification. This allows a write command to be sent after a write command
S CHAR.
DATA N
SLAVE ADR.
18IM responds
S CHAR.
DATA 0
+ W
Rev. 01 — 28 February 2006
S CHAR.
DATA N
SLAVE ADR.
Z CHAR.
SLAVE ADR. + W
OF BYTES
+ W
NUMBER
S CHAR.
DATA N
0x5A
SLAVE ADR. + R
Master I
OF BYTES
NUMBER
DATA 0
OF BYTES
NUMBER
0xA5
2
C-bus controller with UART interface
DATA 0
OF BYTES
NUMBER
P CHAR.
002aac056
DATA 0
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
P CHAR.
002aac054
SC18IM700
DATA N
DD
P CHAR.
002aac055
.
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