Datasheet

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SBAS317E − APRIL 2004 − REVISED MAY 2006
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10
PIN ASSIGNMENTS
NAME
MSC1200
PIN #
MSC1201/1202
PIN #
DESCRIPTION
NC 1, 6, 7, 8, 16,
25, 47
5 No Connection. Leave unconnected.
XIN 2 1 The crystal oscillator pin XIN supports parallel resonant AT-cut fundamental frequency crystals and
ceramic resonators. XIN can also be an input if there is an external clock source instead of a crystal.
XIN must not be left floating.
XOUT 3 2 The crystal oscillator pin XOUT supports parallel resonant AT-cut fundamental frequency crystals and
ceramic resonators. XOUT serves as the output of the crystal amplifier.
DGND 4, 33, 34, 48 3, 26 Digital Ground
RST 5 4 Holding the reset input high for two t
OSC
periods will reset the device.
AV
DD
9 6 Analog Power Supply
AGND 10, 11 7, 8 Analog Ground
AINCOM 12 9 Analog Input (can be analog common for single-ended inputs or analog input for differential inputs)
IDAC 13 10 IDAC Output
REFOUT/REF IN+ 14 11 Internal Voltage Reference Output/Voltage Reference Positive Input (required C
REF
= 0.1µF)
REF IN− 15 12 Voltage Reference Negative Input (tie to AGND for internal voltage reference)
AIN7 17 — Analog Input Channel 7
AIN6 18 — Analog Input Channel 6
AIN5 19 13 Analog Input Channel 5
AIN4 20 14 Analog Input Channel 4
AIN3 21 15 Analog Input Channel 3
AIN2 22 16 Analog Input Channel 2
AIN1 23 17 Analog Input Channel 1
AIN0 24 18 Analog Input Channel 0
P1.0−P1.7 26−32, 37 19−25, 28 Port 1 is a bidirectional I/O port (refer to P1DDRL, SFR AEh, and P1DDRH, SFR AFh, for port pin
configuration control).
The alternate functions for Port 1 are listed below.
Port Alternate Name(s) Alternate Use
P1.0 PROG Serial programming mode (must be DGND on reset)
P1.1 N/A
P1.2 DOUT Serial data out
P1.3 DIN Serial data in
P1.4 INT2/SS External interrupt 2 / Slave Select
P1.5 INT3 External interrupt 3
P1.6 INT4 External interrupt 4
P1.7 INT5 External interrupt 5
DV
DD
35, 36, 46 27 Digital Power Supply
P3.0−P3.7 38−45 29−36 Port 3 is a bidirectional I/O port (refer to P3DDRL, SFR B3h, and P3DDRH, SFR B4h, for port pin
configuration control).
The alternate functions for Port 3 are listed below.
Port Alternate Name(s) Alternate Use
P3.0 RxD0 Serial port 0 input
P3.1 TxD0 Serial port 0 output
P3.2 INT0 External interrupt 0
P3.3 INT1 External interrupt 1
P3.4 T0 Timer 0 external input
P3.5 T1 Timer 1 external input
P3.6 SCK/SCL/CLKS SCK / SCL / various clocks (refer to PASEL, SFR F2h)
P3.7 N/A