SPRS439M – JUNE 2007 – REVISED AUGUST 2012
eCAN0INT
eCAN1INT
Controls Address
Data
Enhanced CAN Controller
Message Controller
Mailbox RAM
(512 Bytes)
32-Message Mailbox
of 4 x 32-Bit Words
32
Memory Management
Unit
32
CPU Interface,
Receive Control Unit,
Timer Management Unit
32
eCAN Memory
(512 Bytes)
Registers and
Message Objects Control
32
eCAN Protocol Kernel
Receive Buffer
Transmit Buffer
Control Buffer
Status Buffer
SN65HVD23x
3.3-V CAN Transceiver
CAN Bus
Figure 4-12. eCAN Block Diagram and Interface Circuit
Table 4-8. 3.3-V eCAN Transceivers
PART NUMBER
SN65HVD230
SN65HVD230Q
SN65HVD231
SN65HVD231Q
SN65HVD232
SN65HVD232Q
SN65HVD233
SN65HVD234
SN65HVD235
SUPPLY
VOLTAGE
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
LOW-POWER
MODE
Standby
Standby
Sleep
Sleep
None
None
Standby
Standby and Sleep
Standby
SLOPE
CONTROL
Adjustable
Adjustable
Adjustable
Adjustable
None
None
Adjustable
Adjustable
Adjustable
VREF
Yes
Yes
Yes
Yes
None
None
None
None
None
OTHER
–
–
–
–
–
–
Diagnostic
Loopback
–
Autobaud
Loopback
T
A
–40°C to 85°C
–40°C to 125°C
–40°C to 85°C
–40°C to 125°C
–40°C to 85°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Copyright © 2007–2012, Texas Instruments Incorporated
Peripherals
87
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