M16C6NK Datasheet, PDF (384/404 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6NK, M16C/6NM)
23. Usage Precaution
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)
Standby Mode
High-speed Mode
Rs Pin ⁽¹⁾
“H”
“L”
CAN Communication impossible
possible
Connection
M16C/6NK, M16C/6NM
PCA82C250
M16C/6NK, M16C/6NM
PCA82C250
CTXi
CRXi
TXD CANH
RXD CANL
CTXi
CRXi
TXD CANH
RXD CANL
Port ⁽²⁾
Rs
Port ⁽²⁾
Rs
Switch OFF
i = 0, 1
NOTES:
1. The pin which controls the operation mode of CAN transceiver.
2. Connect to enabled port to control CAN transceiver.
Switch ON
Table 23.7 Pin Connections of CAN Transceiver (In case of PCA82C252: Philips product)
_______
STB Pin ⁽¹⁾
“L”
Sleep Mode
Normal Operation Mode
“H”
EN Pin ⁽¹⁾
“L”
“H”
CAN Communication impossible
possible
Connection
M16C/6NK, M16C/6NM
PCA82C252
M16C/6NK, M16C/6NM
PCA82C252
CTXi
CRXi
TXD CANH
RXD CANL
CTXi
CRXi
TXD CANH
RXD CANL
Port ⁽²⁾
STB
Port ⁽²⁾
STB
Port ⁽²⁾
EN
Port ⁽²⁾
EN
Switch OFF
i = 0, 1
NOTES:
1. The pin which controls the operation mode of CAN transceiver.
2. Connect to enabled port to control CAN transceiver.
Switch ON
Rev.2.00 Nov 28, 2005 page 366 of 378
REJ09B0124-0200