STFPC320 STMicroelectronics, STFPC320 Datasheet - Page 33

• Manufacturer Part Number: STFPC320
• Description: Front Panel Controller/driver With Standby Power Management And Real-time Clock
• Manufacturer: STMicroelectronics

STFPC320
7.2
Description:
Data setting command
This command sets the data-write and data-read modes.
Table 8.
Table 9.
Bits b7-b6 = 01 is decoded as a data setting command. The subsequent bits are
decoded as follows:
b5 b4 = 00 : Data Write Command (see bits b1-b0)
b5 b4 = 10 : Data Read 1 Command (see bits b1-b0)
b5 b4 = 11 : Data Read 2 Command (see bits b1-b0)
b5 b4 = 01 : Reserved
b3: Clear the Guard Timer (no change in guard time)
b2: ‘1’ implies Fixed Address of display RAM / ‘0’ implies Auto Increments the address
after data has been written
b1-b0
b1-b0
00
01
10
11
00
01
10
11
MSB
Data write command. b5 b4 : 00
Data read 1 command. b5 b4 : 10
0
1
Read Key
Read Switch + Address Pointer
(see
Read RC data (following two bytes are the address + command from
RC); Refer to
Read Interrupt (refer to
Write memory (display or RTC) – See
Enter Test mode (only used for production test)
Do not use this in normal operation.
Clear Test mode
Do not use this in normal operation.
Write LED (see
b5
Section 10: SW data on page
(Section 8: Key matrix on page
Section 15: Remote control protocols on page 48
b4
Section 9: LED port on page
Section 14: Interrupt flags on page
b3
b2
42)
Note Note: on page 34
39)
b1
41)
LSB
b0
Commands
47)
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