Datasheet

Basic Clock
System+
RAM
256B
256B
128B
128B
Brownout
Protection
RST/NMI
VCC VSS
MCLK
SMCLK
Watchdog
WDT+
15/16 Bit
Timer_A3
3 CC
Registers
16MHz
CPU
incl. 16
Registers
Emulation
(2BP)
XOUT
JTAG
Interface
Flash
8kB
4kB
2kB
1kB
ACLK
XIN
Port P1
8 I/ O
Interrupt
capability,
pullup/down
resistors
Comparator
_A+
8 Channel
Input Mux
P1.x, JTAG
8
P2.x,
XIN/XOUT
8
Port P2
8 I/ O
Interrupt
capability,
pullup/down
resistors
MDB
MAB
MSP430F21x1
SLAS439F –SEPTEMBER 2004– REVISED AUGUST 2011 www.ti.com
Functional Block Diagram
NOTE: See port schematics section for detailed I/O information.
4 Copyright © 2004–2011, Texas Instruments Incorporated