MIC2788 Datasheet, PDF (2/17 Pages) Micrel Semiconductor – Push-Button Reset IC

Micrel, Inc.
Ordering Information ⁽¹⁾
Part Number
MIC2788-XYMT
MIC2788-YYMT⁽²⁾
MIC2789-XYMT
MIC2789-YYMT⁽²⁾
Marking
8XA
8YA
9XA
9YA
Minimum
t_RESET (ms)
140
240
140
240
Package ^(3,4)
8-Pin (2mm × 2mm) Thin MLF^®
8-Pin (2mm × 2mm) Thin MLF^®
8-Pin (2mm × 2mm) Thin MLF^®
8-Pin (2mm × 2mm) Thin MLF^®
Notes:
1. All devices available in Tape and Reel only.
2. Contact factory for availability.
3. Thin MLF ^® ▲ = Pin 1 identifier.
4. Thin MLF ^® is a Green RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
MIC2788/MIC2789
Integrated Pull-Up Resistors
Yes
Yes
No
No
Pin Configuration
MIC2788/89
8-Pin (2mm × 2mm) Thin MLF^®
Top View
Pin Description
Pin Number
Pin Name
1
RSTP
2
GND
3
/MR1
4
/RST
5
PDY
Pin Function
Active-High Push-Pull Reset Output. This output changes from low-to-high when both manual
reset pins are pulled low for the setup delay period. RSTP remains high for the reset timeout
delay duration after the setup delay period has elapsed.
Supply Ground.
Active-Low Manual Reset Input. The MIC2788 has an internal 65kΩ pull-up resistor to VIN while
the MIC2789 requires an external pull-up resistor to VIN if used with a push-button. Pull this pin
low to assert and force a reset. Pulling both manual reset inputs low for the setup delay time
causes one reset output pulse for the reset timeout delay period. Connect to VIN if unused, do
not leave floating.
Active-Low Open Drain Reset Output. This output changes from high to low when both manual
reset pins are pulled low for the setup delay period. /RST remains low for the reset timeout delay
after the setup delay has elapsed and it requires an external pull-up resistor.
Programmable Delay Input with Tri-State Connection. When left open, set-up delay is 2s, when
connected to GND, set-up delay is 4s and when connected to VIN, set-up delay is 6s.
October 2011
2
M9999-102711-A