PEB22504HT-V11 Infineon Technologies, PEB22504HT-V11 Datasheet - Page 19

• Manufacturer Part Number: PEB22504HT-V11
• Description: IC INTERFACE QUAD 100-TQFP
• Manufacturer: Infineon Technologies

Specifications of PEB22504HT-V11

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 100-LFQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PEB22504HT-V11; PEB22504HT-V11IN

2.2
Table 1
Pin No.
93...99
59...62
65...68
92
39
37
Data Sheet
Pin Definitions and Functions
Control Pin Functions
Signal
A(0:6)
D(0:3)
D(4:7)
ALE
CS
RD
DS
Input (I)
Output (O)
Supply (S)
I + PU
I/O + PU
I + PU
I + PU
I + PU
I + PU
19
Function
Address Bus
Selects one of the internal registers for
read or write.
Data Bus
Eight-bit-wide bi-directional bus to be
connected to the microprocessor data bus.
Address Latch Enable
A high on this line indicates an address on
the external address/data bus. The
address information provided on lines
A(6:0) is internally latched with the falling
edge of ALE. This function allows the
device to be connected directly to a
multiplexed address/data bus. In this case,
pins A(6:0) must be connected externally to
the data bus pins. In case of demultiplexed
mode, this pin has to be connected to V
or V
Chip Select
A low signal selects the device for read/
write operations
Read Enable/Data Strobe
(Intel bus mode, MODE=low)
This signal indicates a read operation.
When the device is selected via CS, the RD
signal enables the bus drivers to output
data from an internal register addressed via
A(6:0) on to Data Bus.
Data Strobe
(Motorola bus mode, MODE=high)
This pin serves as input to control read/
write operations.
DD
directly.
Pin Descriptions
QuadLIU V1.1
PEB 22504
2001-02
SS