SAK82C900 Infineon Technologies, SAK82C900 Datasheet - Page 9

• Manufacturer Part Number: SAK82C900
• Manufacturer: Infineon Technologies

Specifications of SAK82C900

• Data Rate: 1000Kbps
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (typ): 3.3/5V
• Package Type: DSO
• Supply Current: 80mA
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Preliminary
Operation without Host Device
The standalone functionality comprises an additional mode, leading to a low-cost
system, which does not require any external host device. This mode can be selected by
setting the input pins MODE0 and MODE1 to 1. The best solution are pull-up resistors
(about 10 to 47 kOhm). After the reset phase, the MODE pins can be enabled to control
the power-down functionality of the entire connected system by indicating the internal
status of two clock control bits. The power-down functionality can run completely via
CAN messages (sleep and wake-up by CAN messages).
The initialization sequence is automatically started from an external non-volatile
memory, a serial (SPI-compatible) EEPROM. The data, which is read out from the
EEPROM permits the user to initialize the registers with the desired values in a freely
programmable order. Changes in the application only lead to modified data stored in the
non-volatile memory.
For example, the bit timing, one message object and some control registers are set up
via the data read from the EEPROM. Then, the initialization can continue via CAN
messages.
The 8 remaining I/O pins from the unused parallel interface are controlled by a port
control logic and can be used as I/O extension. These lines can be read or written by
CAN messages.
Figure 4
Data Sheet
Connection to a Serial EEPROM
Input/Output
extension
Transceiver
CAN Bus A
Port Control
TwinCAN Module
I/O7..0
RXDCA,
TXDCA
Serial Interface
Transceiver
CAN Bus B
EEPROM
Serial
9
CTRL3..0
RXDCB,
TXDCB
Clock Control
Power-Down
Control
Device
Indication
82C900
V 1.0D3, 2001-03
82C900