IA8044_10 Datasheet, PDF (17/65 Pages) InnovASIC, Inc – SDLC Communications Controller

IA8044/IA8344
SDLC Communications Controller
Data Sheet
March 30, 2010
3. Maximum Ratings and DC Characteristics
The IA8044/IA8344 absolute maximum ratings and DC characteristics are provided in Tables 3
and 4, respectively.
Table 3. IA8044 and IA8344 Absolute Maximum Ratings
Parameter
Ambient temperature under bias
Storage temperature
Power supply (V_DD)
Voltage on any pin to VSS
Power dissipation
Rating
−40°C to +85°C
−40°C to +150°C
−0.3 to +6VDC
−0.3 to (V_DD +0.3)^a
2W
a_{This device does not contain EPROM or its related programming circuitry. Therefore, this limit must be}
adhered to especially for input pin EA, which is used as the programming voltage pin in the Intel device.
Exceeding the listed maximum voltage will cause damage to the device.
Table 4. IA8044 and IA8344 DC Characteristics
Symbol
Parameter
Min Typ Max Unit
VIL Input Low Voltage
– – 0.8 V
VIH Input High Voltage
2.0 – – V
VOL Output Low Voltage (IOL= 4mA) _{– – 0.4 V}
VOH Output High Voltage (IOH= 4mA) _{3.5 – – V}
RPU Pull-Up Resistance (Ports 1, 2, 3) _{– 50 – KW}
RPD Pull-Down Resistance (RST)
– 50 – KW
IIL
Input Low Current (Ports 1, 2, 3) _{−200 – 1 µA}
IIL1 Input Low Current (PO, EA)
−1 – 1 µA
IIH Input High Current (RST)
−1 – 200 µA
IIH1 Input High Current (PO, EA)
−1 – 1 µA
IOZ Tri-state Leakage Current (Port 0) _{−10 – 10 µA}
ICC Power Supply Current (@ 12 MHz) _{– – 50 mA}
CIO Pin Capacitance
– 4 – pF
4. Functional Description
4.1 Functional Block Diagram
A functional block diagram of the IA8044 and IA8344 is shown in Figure 5. Descriptions of the
functional modules are provided in the following subsections.
®
IA211010112-04
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