MAXQ61CA MAXIM [Maxim Integrated Products], MAXQ61CA Datasheet - Page 9

• Manufacturer Part Number: MAXQ61CA
• Description: 16-Bit Microcontroller with Infrared Module
• Manufacturer: MAXIM [Maxim Integrated Products]

BARE DIE
27, 40
14
16
15
13
17
18
41
42
—
16-Bit Microcontroller with Infrared Module
32 TQFN-
EP/LQFP
17, 30
PIN
_______________________________________________________________________________________
10
12
11
13
14
31
32
—
9
44 TQFN-
EP/TQFP
28, 41
13
15
14
12
16
17
42
43
—
REGOUT
HFXOUT
RESET
NAME
HFXIN
GND
GND
IRRX
IRTX
V
EP
DD
IR FUNCTION PINS
Supply Voltage
Ground. Connect directly to the ground plane.
Ground. For low-current applications (< 10mA of GPIO current, exclu-
sive of IRTX sink current), these pins can be left unconnected. If used,
they should be connected directly to the ground plane.
1.8V Regulator Output. This pin must be connected to ground through
a 1.0FF (ESR: 2–10W) external ceramic-chip capacitor. The capacitor
must be placed as close to this pin as possible. No devices other than
the capacitor should be connected to this pin.
Exposed Pad (TQFN Only). For low-current applications (< 10mA of
GPIO current, exclusive of IRTX sink current), these pins can be left
unconnected. If used, they should be connected directly to the ground
plane.
Digital, Active-Low Reset Input/Output. The device remains in reset
as long as this pin is low and begins executing from the utility ROM at
address 8000h when this pin returns to a high state. The pin includes
pullup current source; if this pin is driven by an external device, it should
be driven by an open-drain source capable of sinking in excess of 4mA.
This pin can be left unconnected if there is no need to place the device in
a reset state using an external signal. This pin is driven low as an output
when an internal reset condition occurs.
High-Frequency Crystal Input. Connect an external crystal or resona-
tor between HFXIN and HFXOUT for use as the high-frequency system
clock. Alternatively, HFXIN is the input for an external, high-frequency
clock source when HFXOUT is connected to ground.
IR Transmit Output. IR transmission pin capable of sinking 25mA. This
pin defaults to a high-impedance input with the weak pullup disabled
during all forms of reset. Software must configure this pin after release
from reset to remove the high-impedance input condition.
IR Receive Input. This pin defaults to a high-impedance input with the
weak pullup disabled during all forms of reset. Software must configure
this pin after release from reset to remove the high-impedance input
condition.
POWER PINS
CLOCK PINS
RESET PINS
FUNCTION
Pin Description
9