MAXQ615 Maxim Integrated Products, MAXQ615 Datasheet - Page 17

• Manufacturer Part Number: MAXQ615
• Description: 16-Bit MAXQ Microcontroller
• Manufacturer: Maxim Integrated Products

Figure 7. Stop Mode Power-Fail Detection with Power-Fail Monitor Disabled
Table 4. Stop Mode Power-Fail Detection States with Power-Fail Monitor Disabled
STATE
A
B
C
INTERNAL RESET
(ACTIVE HIGH)
POWER-FAIL
V
INTERRUPT
V
V
PFW
POR
RST
Off
Off
On
STOP
���������������������������������������������������������������� Maxim Integrated Products 17
V
DD
REGULATOR
A
INTERNAL
Off
Off
On
B
16-Bit MAXQ Microcontroller with
OSCILLATOR
CRYSTAL
Off
Off
On
C
RETENTION
SRAM
www.DataSheet.co.kr
Yes
Yes
Yes
Application enters stop mode.
V
CPU in stop mode.
V
Power-fail not detected because power-fail monitor
is disabled.
V
An interrupt occurs that causes the CPU to exit
stop mode.
Power-fail monitor is turned on, detects a power-fail
warning, and sets the power-fail interrupt flag.
Turn on regulator and crystal.
Crystal warmup time, t
On stop mode exit, CPU vectors to the higher
priority of power-fail and the interrupt that causes
stop mode exit.
Hardware Multiplier
DD
DD
RST
> V
< V
< V
RST
PFW
DD
.
.
< V
D
PFW
COMMENTS
.
XTAL_RDY
MAXQ615
E
.
F
Datasheet pdf - http://www.DataSheet4U.net/