Datasheet
5Maxim Integrated
16-Bit Microcontrollers with
Infrared Module and Optional USB
MAXQ612/MAXQ622
RECOMMENDED OPERATING CONDITIONS (continued)
(V
DD
= V
RST
to 3.6V, T
A
= 0NC to +70NC.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Hysteresis (Schmitt) V
IHYS
300 mV
Input Low Voltage for HFXIN V
IL_HFXIN
External driven clock and not
feedback connected crystal
oscillator
V
GND
0.3 x V
DD
V
Input High Voltage for HFXIN V
IH_HFXIN
External driven clock and not
feedback connected crystal
oscillator
0.7 x V
DD
V
DD
V
IRRX Input Filter Pulse-Width
Reject
t
IRRX_R
50 ns
IRRX Input Filter Pulse-Width
Accept
t
IRRX_A
300 ns
Output Low Voltage for IRTX V
OL_IRTX
V
DD
= 3.6V, I
OL
= 25mA (Note 6) 1.0
VV
DD
= 2.35V, I
OL
= 10mA (Note 6) 1.0
V
DD
= 1.85V, I
OL
= 4.5mA 1.0
Output Low Voltage for RESET
and All Port Pins (Note 12)
V
OL
V
DD
= 3.6V, I
OL
= 11mA (Note 6) 0.4 0.5
VV
DD
= 2.35V, I
OL
= 8mA (Note 6) 0.4 0.5
V
DD
= 1.85V, I
OL
= 4.5mA 0.4 0.5
Output High Voltage for IRTX
and All Port Pins
V
OH
I
OH
= -2mA
V
DDIO
-
0.5
V
DDIO
V
Input/Output Pin Capacitance
for All Port Pins Except DP, DM
C
IO
(Note 6) 15 pF
Input Leakage Current I
L
Internal pullup disabled -100 +100 nA
Input Pullup Resistor for
RESET, IRTX, IRRX, P0 to P6
R
PU
V
DD
= 3V, V
OL
= V
DD
/2 (Note 6) 16 25 39
kW
V
DD
= 2V, V
OL
= V
DD
/2 17 27 41
V
DD
= 3.0V, V
OL
= 0.4V (Note 6) 16 28 39
V
DD
= 2.0V, V
OL
= 0.4V (Note 6) 17 30 41
GPIO Supply Output High
Voltage
V
DDIOH
V
DDIOH
current is the sum of V
DDIO
current and I
OH
of all GPIO, I
OH
=
10mA
V
DD
- 0.4 V
DD
V
EXTERNAL CRYSTAL/RESONATOR
Crystal/Resonator f
HFXIN
(Note 13) 1 12 MHz
Crystal/Resonator Period t
HFXIN
1/f
HFXIN
ns
Crystal/Resonator Warmup
Time
t
XTAL_RDY
From initial oscillation
8192 x
t
HFXIN
ms
Oscillator Feedback Resistor R
OSCF
(Note 6) 0.5 1.0 1.5
MW
Crystal ESR (Note 6) 60
W
EXTERNAL CLOCK INPUT
External Clock Frequency f
XCLK
(Note 13) DC 12 MHz
External Clock Period t
XCLK
1/f
XCLK
ns
External Clock Duty Cycle t
XCLK_DUTY
45 55 %
System Clock Frequency f
CK
f
HFXIN
MHz
HFXOUT = GND f
XCLK