ft7521 Fairchild Semiconductor, ft7521 Datasheet - Page 2

• Manufacturer Part Number: ft7521
• Description: Reset Timer With Fixed Delay Time And Reset Pulse
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FT7521 • Rev. 1.0.1
Block Diagram
Pin Configuration
Pin Definitions
Note:
1.
Pin # Name
1
2
3
4
5
6
This pin must always be tied to either GND or VCC. It must not float.
/RST1
TEST
GND
/SR0
DSR
VCC
Open-Drain Output, Active LOW
GND
Reset Input with Integrated Pull-up, Active
LOW
Power Supply
Delay Selection Input. Tie to GND during
normal operation.
Used for device testing; should be tied to GND
during normal use.
Normal Operation
Figure 2.
(1
1
)
Figure 1.
Pad Assignments (Top-Through View)
Block Diagram
2
Description
Open-Drain Output, Active LOW
GND
Reset Input with Integrated Pull-up, Active LOW
Power Supply
Delay Selection Input. Pull HIGH to enable 0-
second delay for factory test.
Used for device testing; should be tied to GND
during normal use.
0-Second Factory-Test Mode
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