PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 168

• Manufacturer Part Number: PSB21473FV13XT
• Manufacturer: Infineon Technologies

Specifications of PSB21473FV13XT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Lead Free Status / RoHS Status: Compliant

Data Sheet
11.2
Important timing characteristics of the external bus interface have been made user
programmable to allow to adapt it to a wide range of different external bus and memory
configurations with different types of memories and/or peripherals.
The following parameters of an external bus cycle are programmable:
• ALE Control defines the ALE signal length and the address hold time after its falling edge
• Memory Cycle Time (extendable with 1...15 waitstates) defines the allowable access time
• Memory Tri-State Time (extendable with 1 waitstate) defines the time for a data driver to float
• Read/Write Delay Time defines when a command is activated after the falling edge of ALE
Note: Internal accesses are executed with maximum speed and therefore are not
Figure 11-5 Programmable External Bus Cycle
programmable.
External acceses use the slowest possible bus cycle after reset. The bus cycle
timing may then be optimized by the initialization software.
Programmable Bus Characteristics
ALECTL
168
MCTC
The External Bus Interface
MTTC
PSB 21473
2003-03-31
INCA-D