STM6321LWY6E STMICROELECTRONICS [STMicroelectronics], STM6321LWY6E Datasheet
STM6321LWY6E
Related parts for STM6321LWY6E
STM6321LWY6E Summary of contents
Page 1
FEATURES SUMMARY PRECISION V MONITORING OF 5V, 3.3V, CC 3V, OR 2.5V POWER SUPPLIES – STM6xxxL – STM6xxxM – STM6xxxT – STM6xxxS – STM6xxxR – STM6xxxZ RST OUTPUTS (ACTIVE-LOW, PUSH-PULL OR OPEN DRAIN) RST OUTPUTS (ACTIVE-HIGH, PUSH- PULL) 200ms (TYP) ...
Page 2
STM6321/6322/6821/6822/6823/6824/6825 TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3
Figure 20.Maximum Transient Duration vs. Reset Threshold Overdrive MAXIMUM RATING ...
Page 4
STM6321/6322/6821/6822/6823/6824/6825 SUMMARY DESCRIPTION The STM6xxx Supervisors are self-contained de- vices which provide microprocessor supervisory functions. A precision voltage reference and com- parator monitors the V input for an out-of-toler- CC ance condition. When an invalid V occurs, the reset output ...
Page 5
Pin Descriptions Active-Low, Push-pull Reset Output (RST) - STM6822/6823/6824/6825. Pulses low when trig- gered, and stays low whenever V reset threshold or when logic low. It re- mains low for t after either V rec reset threshold, ...
Page 6
STM6321/6322/6821/6822/6823/6824/6825 Figure 7. Hardware Hookup 0.1 F From Microprocessor Note: 1. For STM6321/6821/6822/6823/6824 2. For STM6322/6821/6822/6823/6825 3. For STM6821/ (RST output only) 4. For STM6321/6322/6824/6825 (both RST and RST outputs) 6/ STM6XXX (1) WDI (2) MR ...
Page 7
OPERATION Reset Output The STM6xxx Supervisor asserts a reset signal to the MCU whenever V goes below the reset CC threshold ( watchdog time-out occurs, or RST when the Push-button Reset Input (MR) is taken low. Reset is ...
Page 8
STM6321/6322/6821/6822/6823/6824/6825 Ensuring a Valid Reset Output Down 0V. The STM6xxx Supervisors are guaran- CC teed to operate properly down to V plications that require valid reset levels down pull-down resistor to active-low ...
Page 9
TYPICAL OPERATING CHARACTERISTICS Figure 12. V -to-Reset Output Delay vs. Temperature –40 –20 Figure 13. Supply Current vs. Temperature –40 –20 STM6321/6322/6821/6822/6823/6824/6825 0 ...
Page 10
STM6321/6322/6821/6822/6823/6824/6825 Figure 14. MR-to-Reset Output Delay vs. Temperature 600 500 400 300 200 100 0 –40 –20 Figure 15. Normalized Power-up t 1.05 1.04 1.03 1.02 1.01 1.00 0.99 –40 10/ Temperature (˚C) vs. Temperature rec –20 0 ...
Page 11
Figure 16. Normalized Reset Threshold Voltage vs. Temperature 1.05 1.04 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 –40 –20 Figure 17. Normalized Power-up Watchdog Time-Out Period 1.05 1.04 1.03 1.02 1.01 1.00 0.99 –40 STM6321/6322/6821/6822/6823/6824/6825 0 20 Temperature ...
Page 12
STM6321/6322/6821/6822/6823/6824/6825 Figure 18. Voltage Output Low vs. I 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0. Figure 19. Voltage Output High vs. I 2.92 2.90 2.88 2.86 2.84 2.82 2.80 2.78 2.76 2.74 0.0 0.1 0.2 12/21 SINK ...
Page 13
Figure 20. Maximum Transient Duration vs. Reset Threshold Overdrive STM6321/6322/6821/6822/6823/6824/6825 60 80 100 120 Reset Threshold Overdrive (mV) 140 160 180 200 AI09637a 13/21 ...
Page 14
STM6321/6322/6821/6822/6823/6824/6825 MAXIMUM RATING Stressing the device above the rating listed in the Absolute Maximum Ratings” table may cause per- manent damage to the device. These are stress ratings only and operation of the device at these or any other conditions ...
Page 15
DC AND AC PARAMETERS This section summarizes the operating measure- ment conditions, and the DC and AC characteris- tics of the device. The parameters in the DC and AC characteristics Tables that follow, are derived from tests performed under the ...
Page 16
STM6321/6322/6821/6822/6823/6824/6825 Table 6. DC and AC Characteristics Alter- Sym Description native V Operating Voltage CC V Supply Current CC (MR and WDI unconnected Supply Current CC (MR unconnected; STM6322/6825) Input Leakage Current I Input Leakage Current LI ...
Page 17
Alter- Sym Description native Reset Thresholds (5) Reset Threshold V RST Reset Threshold Hysteresis V to RST Delay CC (V – V RST CC V falling at 1mV/µ Reset Pulse Width rec Reset Threshold Temperature Coefficient Push-button Reset ...
Page 18
STM6321/6322/6821/6822/6823/6824/6825 PACKAGE MECHANICAL Figure 24. SOT23-5 – 5-lead Small Outline Transistor Package Mechanical Drawing 0. SOT23-5b Note: Drawing is not to scale. Table 7. SOT23-5 – 5-lead Small Outline ...
Page 19
PART NUMBERING Table 8. Ordering Information Scheme Example: Device Type STM6xxx Reset Threshold Voltage 4.514V to 4.746V RST 4.270V to 4.490V RST 3.000V to 3.150V RST 2.850V to ...
Page 20
STM6321/6322/6821/6822/6823/6824/6825 REVISION HISTORY Table 10. Document Revision History Date Version August 25, 2004 1.0 15-Dec-04 2.0 20/21 Revision Details First Draft Update characteristics (Figure 12, 13, 14; Table 6, 8) ...
Page 21
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. ...