MC68HC58 Motorola, MC68HC58 Datasheet - Page 25

• Manufacturer Part Number: MC68HC58
• Description: Data Link Controller
• Manufacturer: Motorola

2.2.1.12 SCLK — Serial Clock
2.2.1.13 SIMO — Slave In Master Out
2.2.1.14 SOMI — Slave Out Master In
2.2.1.15 V
2.2.1.16 V
2.2.1.17 V
2.2.1.18 V
2.2.1.19 V
MC68HC58
TECHNICAL DATA
This pin is used to input a serial clock signal to the DLC SPI. This signal is generated
by the SPI bus master device (typically the MCU).
The SPI interface performs simultaneous bidirectional transfers initiated by a bus mas-
ter. This pin connects the serial data input from the SPI bus to the DLC (the DLC is an
SPI slave device).
The SPI performs simultaneous bidirectional transfers initiated by a bus master. This
pin connects the serial data output from the DLC to the SPI bus (the DLC is an SPI
slave device).
This pin connects a separate switched or unswitched 12 Vdc power supply to the DLC
bus transceiver. This supply should be well regulated and protected against switching
transients.
This pin connects a nominal 5 Vdc power supply to the analog transceiver circuitry in
the DLC. For maximum noise immunity, V
supply path
This pin connects a nominal 5 Vdc power supply to the digital control circuitry in the
DLC. For maximum noise immunity, the V
supply path
This pin provides the analog power ground connection to the DLC. Loss of analog
ground directly affects operation of the LOAD pin. For best noise immunity in opera-
tion, the V
This pin provides the digital power ground connection to the DLC. For best noise im-
munity in operation, the V
path
.
BATT
CC
DD
SSA
SSD
— Analog Power Supply Voltage
— Digital Power Supply Voltage
SSA
— Analog Power Ground
— Digital Power Ground
.
.
— Battery Voltage
ground path should be separate from the V
SIGNAL AND PIN DESCRIPTIONS
SSD
ground path should be separate from the V
CC
DD
supply path should be separate from V
supply path should be separate from V
SSD
ground path
SSA
.
MOTOROLA
ground
2-9
DD
CC