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參數(shù)資料
| 型號： | MC68HC58DW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), LOCAL AREA NETWORK CONTROLLER, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 19/102頁 |
| 文件大?。?/td> | 700K |
| 代理商： | MC68HC58DW |
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MC68HC58
SIGNAL AND PIN DESCRIPTIONS
MOTOROLA
TECHNICAL DATA
2-7
2.2 MC68HC58 DLC Serial Mode
The MC68HC58 DLC communicates with the host MCU via a standard serial periph-
eral interface (SPI) when in serial mode. Interface timing is based on a serial clock sig-
nal (SCLK) provided by the host MCU. Motorola M68HC05, M68HC11, M68HC16,
and M68300 series MCUs have SPI capabilities, but any host MCU that meets the
clock specification can be used. Refer to Figure 2-1 for serial mode pinout information.
2.2.1 DLC Serial Mode Pin Function
Table 2-2 summarizes DLC serial mode pin function. Detailed discussion of each
function follows. Refer to APPENDIX A ELECTRICAL CHARACTERISTICS for more
information on electrical specifications.
2.2.1.1 BUS — SAE J1850 Multiplex Bus
This pin connects the DLC to the SAE J1850 multiplex bus. The bus signal is driven
to a nominal 7 Vdc with respect to the bus load in an active level; it is grounded through
the bus load in a passive level.
2.2.1.2 CS — DLC Chip-Select
This pin is used to input the DLC serial data exchange enable signal. It has a nominal
15 k
internal pull-up resistor.
Table 2-2 MC68HC58 DLC Serial Mode Pin Functions
Name
Type
Function
BUS
Input/Output
Serial bus connection
CS
Input
DLC chip-select signal
INT
Output
DLC interrupt request
LITO
Input/Output
Logic in transceiver out signal
LOAD
Input
External bus load connection
LOTI
Input/Output
Logic out transceiver in signal
OSC1
Input
External clock connection
OSC2
Output
External reference connection
PSEN
Output
Power supply status signal
PRLMD
Input
Parallel/serial mode select signal
REXT
Input
Transceiver biasing resistor
RST
Input
DLC reset signal
SCLK
Input
SPI serial clock
SIMO
Input
Slave in master out signal
SOMI
Output
Slave out master in signal
V
BATT
Power supply
Transceiver power connection
V
CC
Power supply
Analog power connection
V
DD
Power supply
Digital power connection
V
SSA
Power supply
Analog ground
V
SSD
Power supply
Digital ground
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