stm1818r STMicroelectronics, stm1818r Datasheet - Page 4

• Manufacturer Part Number: stm1818r
• Description: Low Power Reset Circuit
• Manufacturer: STMicroelectronics

List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
4/25
Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SOT23-3 connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hardware hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Push-pull active-low output (STM1810/1812/1815/1817) . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Open drain, active-low output (STM1811/1816) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Open drain, active-low output (bidirectional, manual reset detect, STM1813/1818) . . . . . . 7
Reset timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Push-button manual reset with MR detect (STM1813/1818) . . . . . . . . . . . . . . . . . . . . . . . 10
Manual reset timing diagram, switch bounce/debounce (STM1813/1818) . . . . . . . . . . . . . 11
Interfacing MCUs with bidirectional reset pins (RST, open drain, STM1811/1816) . . . . . . 11
Valid reset (RST) output down to V
Valid reset (RST) output down to V
Supply current vs. temperature (no load) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Normalized reset time-out period (t
- V
V
Voltage output low vs. I
Voltage output high vs. I
Normalized reset threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Max transient duration NOT causing reset pulse vs. reset threshold overdrive . . . . . . . . . 16
AC testing input/output waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SOT23-3 – 3-lead small outline transistor package outline . . . . . . . . . . . . . . . . . . . . . . . . 20
CC
OD
-to-reset output delay vs. temperature - V
= V
TH
– V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SINK
SOURCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
rec
CC
CC
) vs. temperature
= 0 V (push-pull). . . . . . . . . . . . . . . . . . . . . . . . . . . 11
= 0 V (push-pull). . . . . . . . . . . . . . . . . . . . . . . . . . . 12
STM1810/1811/1812/1813/1815/1816/1817/1818
OD
= V
TH
– V
CC
. . . . . . . . . . . . . . . . . . . . . 14