MSP430X33X Datasheet, PDF (4/27 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLERS

MSP430x33x
MIXED SIGNAL MICROCONTROLLERS
SLAS163 – FEBRUARY 1998
TERMINAL
NAME
NO.
TMS
94
TDO/TDI
92
TP0.0
3
TP0.1
4
TP0.2
5
TP0.3
6
TP0.4
7
TP0.5
8
VCC1
1
VCC2
29
VSS1
100
VSS2
28
VSS3
52
XBUF
97
Xin
99
Xout/TCLK
98
Terminal Functions
I/O
DESCRIPTION
I
Test mode select. TMS is used as an input port for device programming and test
I/O Test data output port. TDO/TDI data output or programming data input terminal
O General purpose 3–state digital output port, bit 0 – timer/port
O General purpose 3–state digital output port, bit 1 – timer/port
O General purpose 3–state digital output port, bit 2 – timer/port
O General purpose 3–state digital output port, bit 3 – timer/port
O General purpose 3–state digital output port, bit 4 – timer/port
I/O General purpose 3–state digital input/output port, bit 5 – timer/port
Positive supply voltage
Positive supply voltage
Ground reference
Ground reference
Ground reference
O System clock (MCLK) or crystal clock (ACLK) output
I
Input port for crystal oscillator
I/O Output terminal of crystal oscillator or test clock input
short-form description
processing unit
The processing unit is based on a consistent and orthogonal designed CPU and instruction set. This design
structure results in a RISC-like architecture, highly transparent to the application development and is
distinguished due to ease of programming. All operations, other than program-flow instructions consequently
are performed as register operations in conjunction with seven addressing modes for source and four modes
for destination operand.
cpu registers
Sixteen registers are located inside the CPU,
providing reduced instruction execution time. This
reduces a register-register operation execution
time to one cycle of the processor frequency.
Program Counter
Stack Pointer
Status Register
PC/R0
SP/R1
SR/CG1/R2
Four of the registers are reserved for special use
as a program counter, a stack pointer, a status
register and a constant generator. The remaining
registers are available as general purpose
registers.
Peripherals are connected to the CPU using a
data address and control bus and can be handled
easily with all instructions for memory manipula-
tion.
Constant Generator
CG2/R3
General Purpose Register R4
General Purpose Register R5
General Purpose Register R14
General Purpose Register R15
4
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