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Delphi Input/Output Device

The Delphi Input/Output Device (IOD) is intended for use with systems employing a 6800-style microprocessor. The purpose of this part is to add expansion capability for additional I/O control. The IOD performs this through three banks of 8-bit wide programmable port pins directly controlled by the host processor. In addition, the IOD contains four separate PWM channels individually controlled by the host which can be programmed for varying frequency and duty cycle. The IOD also contains special reset logic to allow multiprocessor applications. The IOD contains two open drain outputs that can be used to control external PNP switches. The reset logic also has a separate "Keep Alive" power supply which allows for a "shutdown" mode on the IC.

Features

Three I/O ports (8 bits wide)
Four configurable PWMs
Multi-Processor reset capability
"Keep Alive" mode

Packaging

Available in QFP or PLCC
Available in Flip Chip

Typical Applications

Automotive Electronics
Control Systems with Embedded Processors

Recommended Operating Conditions

Characterictic	Symbol	Value	Unit
Supply Voltage	Vdd	4.75 to 5.25	V
Operating Temp. Range, Ambient	Ta	-40 to 125	°C

Absolute Maximum Ratings

Characteristic	Symbol	Value	Unit
Supply Voltage	Vdd	-0.5 to 7.0	V
Input Voltage	Vin	-0.5 to Vdd .05	V
Storage Temp. Range	Tstg	-65 to 150	°C
Max. Junction Temp.		150	°C

Electrical Performance Characteristics - IOD

Characteristics	Symbol	Condition	Min	Max	Typ	Unit
Output Voltage Low	Vol
SOD Pin		lol=2.0 mA (open drain)		0.5	0.25	V
CNOP, RST 1/2				0.4	0.25	V
Data, Ports, PWM		lol=1.6 mA		0.4	0.25	V
Output Voltage High	Voh
Data, Ports, PWM		loh=-0.8 mA	Vdd -0.8		Vdd -0.2	V
CNOP*		loh=-1.0 mA	Vdd -0.8		Vdd -0.2	V
Input Voltage Low	Vil
Ports				.055 Vdd	0.6 Vdd	V
CS*, Data, E, R/W, RS				.03 Vdd	0.45 Vdd	V
MRST, RST 1/2				.03 Vkam	0.45 Vkam	V
Input Voltage High	Vih
Ports			0.65 Vdd		0.6 Vdd	V
CS*, Data, E. R/W, RS			0.7 Vdd		0.5 Vdd	V
MRST*, RST 1/2			0.7 Vkam		0.5 Vkam	V
Operating Supply Current	Idd	MRST* & CS* = 0 V, E running		25	15	mA
"Keep Alive" Current	Ikam	Vdd=0 V, Vkam=5.25 V		5	0.5	µA
Operating Frequency	F		0.5	4	3.15	MHz
Data Access Time	Tacc	Output Mode, Load=100 pF		108	70	ns

Delphi Input/Output Device (49k)