MSP430P325A Datasheet, PDF (24/35 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430C32x, MSP430P325A
MIXED SIGNAL MICROCONTROLLER
SLAS219B − MARCH 1999 − REVISED MARCH 2000
TYPICAL CHARACTERISTICS
typical input/output schematics
VC
VD
Control COM0−3
VA
VB
Segment contol
VA
VB
Segment control
LCDCTL (LCDM5,6,7)
Data (LCD RAM bits 0−3
or bits 4−7)
COM 0−3
S0, S1
S2/O2−Sn/On
LCD OUTPUT (COM0−4, Sn, Sn/On)
NOTE: The signals VA, VB, VC, and VD come from the LCD module analog voltage generator.
TDI/VPP
JTAG
Fuse
VPP_ Internal
TDI_ Internal
TDO/TDI_Control
TDO/TDI
TMS
JTAG Fuse
Blow
Control
TDO_ Internal
From/To JTAG_CBT_SIG_REG
NOTES: A. During programming activity and when blowing the JTAG enable fuse, the TDI/VPP terminal is used to apply the correct voltage
source. The TDO/TDI terminal is used to apply the test input data for JTAG circuitry.
B. The TDI/VPP terminal of the ’P325A and ’E325A does not have an internal pullup resistor. An external pulldown resistor is
recommended to avoid a floating node which could increase the current consumption of the device.
C. The TDO/TDI terminal is in a high-impedance state after POR. The ’P325A and ’E325A needs a pullup or a pulldown resistor to avoid
floating a node which could increase the current consumption of the device.
Figure 7. MSP430P325A/E325A: TDI/VPP, TDO/TDI
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