MAXQ622G-0000+ Maxim Integrated Products, MAXQ622G-0000+ Datasheet - Page 28

• Manufacturer Part Number: MAXQ622G-0000+
• Description: IC MCU 16BIT 64K IR MOD 64LQFP
• Manufacturer: Maxim Integrated Products
• Series: MAXQ™r

Specifications of MAXQ622G-0000+

• Core Processor: RISC
• Core Size: 16-Bit
• Speed: 12MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, Infrared, Power-Fail, POR, WDT
• Number Of I /o: 44
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 1.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 64-LQFP
• Processor Series: MAXQ622
• Core: RISC
• Data Bus Width: 16 bit
• Data Ram Size: 6 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 12 MHz
• Number Of Programmable I/os: 44
• Number Of Timers: 2
• Operating Supply Voltage: 1.7 V to 3.6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: MAXQUSBJTAG-KIT MAXQ622-KIT
• Minimum Operating Temperature: 0 C
• For Use With: MAXQ622-KIT# - EVALUATION KIT FOR MAXQ622
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

16-Bit Microcontrollers with
Infrared Module and Optional USB
Figure 7. Stop Mode Power-Fail Detection with Power-Fail Monitor Disabled
Table 7. Stop Mode Power-Fail Detection States with Power-Fail Monitor Disabled
28
STATE
A
B
C
_____________________________________________________________________________________
INTERNAL RESET
(ACTIVE HIGH)
POWER-FAIL
INTERRUPT
V
V
V
PFW
POR
RST
Off
Off
On
STOP
V
DD
A
REGULATOR
INTERNAL
B
Off
Off
On
OSCILLATOR
CRYSTAL
Off
Off
On
C
RETENTION
SRAM
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 inter-
rupt that causes stop mode exit.
DD
DD
RST
> V
< V
< V
D
RST
PFW
DD
.
.
< V
COMMENTS
PFW
.
XTAL_RDY
E
F
.