AT89C5131A-M Atmel Corporation, AT89C5131A-M Datasheet - Page 112
AT89C5131A-M
Manufacturer Part Number
AT89C5131A-M
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C5130A-M.pdf
(188 pages)
2.AT89C5130A-M.pdf
(4 pages)
3.AT89C5130A-M.pdf
(34 pages)
Specifications of AT89C5131A-M
Flash (kbytes)
32 Kbytes
Max. Operating Frequency
48 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
1024
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/USB
Watchdog
Yes
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Table 20-6.
112
SSSTA
Status
Code
08h
10h
38h
40h
48h
50h
58h
Status of the Two-
wire Bus and Two-
wire Hardware
A START condition has
been transmitted
A repeated START
condition has been
transmitted
Arbitration lost in
SLA+R or NOT ACK
bit
SLA+R has been
transmitted; ACK has
been received
SLA+R has been
transmitted; NOT ACK
has been received
Data byte has been
received; ACK has
been returned
Data byte has been
received; NOT ACK
has been returned
AT89C5130A/31A-M
Status in Master Receiver Mode
To/From SSDAT
Write SLA+R
Write SLA+R
Write SLA+W
No SSDAT action
No SSDAT action
No SSDAT action
No SSDAT action
No SSDAT action
No SSDAT action
No SSDAT action
Read data byte
Read data byte
Read data byte
Read data byte
Read data byte
Application software response
SSSTA
X
X
X
0
1
0
0
1
0
1
0
0
1
0
1
SSSTO
To SSCON
0
0
0
0
0
0
0
0
1
1
0
0
0
1
1
SSI
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SSAA
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
Next Action Taken by Two-wire Hardware
SLA+R will be transmitted.
SLA+R will be transmitted.
SLA+W will be transmitted.
Logic will switch to master transmitter mode.
Two-wire bus will be released and not addressed
slave mode will be entered.
A START condition will be transmitted when the bus
becomes free.
Data byte will be received and NOT ACK will be
returned.
Data byte will be received and ACK will be returned.
Repeated START will be transmitted.
STOP condition will be transmitted and SSSTO flag
will be reset.
STOP condition followed by a START condition will
be transmitted and SSSTO flag will be reset.
Data byte will be received and NOT ACK will be
returned.
Data byte will be received and ACK will be returned.
Repeated START will be transmitted.
STOP condition will be transmitted and SSSTO flag
will be reset.
STOP condition followed by a START condition will
be transmitted and SSSTO flag will be reset.
4337K–USB–04/08
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