STM6504 STMicroelectronics, STM6504 Datasheet - Page 6

• Manufacturer Part Number: STM6504
• Description: Dual push-button smart reset
• Manufacturer: STMicroelectronics

Specifications of STM6504

• Adjustable Smart Reset Setup Delay (tsrc): by external capacitor or three-state logic (product options)
• Operating Temperature: industrial grade –40 °C to +85 °C
• Tdfn8 Package: 2 mm x 2 mm x 0.75 mm

Description
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The STM65xx devices have active-low (optionally active-high) open-drain reset (RST)
output(s) with or without internal pull-up resistor or push-pull as output options, with factory-
programmed or capacitor-adjustable or push-buttons defined output reset pulse duration,
with or without power-on reset function.
Some devices also have an undervoltage monitoring feature: the reset output is also
asserted when the monitored supply voltage V
reset output remains asserted for the reset timeout period (t
voltage goes above the specified threshold.
Figure 1.
Figure 2.
Logic diagrams
Pin connections
SRC
SRE
SR0
SR0
SR1
TSR
RST
V SS
V SS
SRE
SR1
RST
NC
NC
STM6504
1
2
3
4
1
2
3
4
STM6502
V CC
V CC
V SS
V SS
6502
6504
STM
STM
Doc ID 16101 Rev 6
8
7
6
5
8
7
6
5
V CC
SR0
TSR
NC
V CC
SR0
SRC
NC
RST
RST
CC
STM6502, STM6503, STM6504, STM6505
drops below the specified threshold. The
V BAT
V SS
BLD
SRC
RST
V SS
TSR
SR0
RST
SR1
SR1
SR0
SR1
SR1
NC
1
2
3
4
1
2
3
4
REC
STM6503
STM6505
6503
STM
6505
STM
V CC
V SS
V CC
V SS
) after the monitored supply
8
7
6
5
8
7
6
5
V CC
SR0
SRC
V BAT
V CC
SR0
TSR
NC
RST
RST
BLD
AM00379
AM00378