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M16C/6N Group (M16C/6NK, M16C/6NM)
23.14.4 CAN Transceiver in Boot Mode
When programming the flash memory in boot mode via CAN bus, the operation mode of CAN transceiver
should be set to "high-speed mode" or "normal operation mode". If the operation mode is controlled by
the microcomputer, CAN transceiver must be set the operation mode to "high-speed mode" or "normal
operation mode" before programming the flash memory by changing the switch etc. Tables 23.6 and 23.7
show pin connections of CAN transceiver.
Table 23.6 Pin Connections of CAN Transceiver (In case of PCA82C250: Philips product)
(1)
Rs Pin
"H"
CAN Communication impossible
Connection
M16C/6NK, M16C/6NM
i = 0, 1
NOTES:
1. The pin which controls the operation mode of CAN transceiver.
2. Connect to enabled port to control CAN transceiver.
Table 23.7 Pin Connections of CAN Transceiver (In case of PCA82C252: Philips product)
_______
(1)
STB Pin
"L"
(1)
EN Pin
"L"
CAN Communication impossible
Connection
M16C/6NK, M16C/6NM
i = 0, 1
NOTES:
1. The pin which controls the operation mode of CAN transceiver.
2. Connect to enabled port to control CAN transceiver.
Rev.2.00
Nov 28, 2005
REJ09B0124-0200
Standby Mode
PCA82C250
CTXi
TXD
CRXi
RXD
Por
(2)
Rs
t
Switch OFF
Sleep Mode
PCA82C252
CTXi
TXD
CRXi
RXD
Por
(2)
STB
t
Por
EN
t
(2)
Switch OFF
page 366 of 378
"L"
possible
M16C/6NK, M16C/6NM
CANH
CANL
Por
Normal Operation Mode
"H"
"H"
possible
M16C/6NK, M16C/6NM
CANH
CANL
Por
Por
23. Usage Precaution
High-speed Mode
PCA82C250
CTXi
TXD
CANH
CRXi
RXD
CANL
(2)
Rs
t
Switch ON
PCA82C252
CTXi
TXD
CANH
CRXi
RXD
CANL
(2)
STB
t
EN
t
(2)
Switch ON
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