Datasheet
Table Of Contents
- features
- description
- Available Options
- pin designation
- functional block diagram
- Terminal Functions
- short-form description
- absolute maximum ratings
- recommended operating conditions
- electrical characteristics over recommended operating free-air temperature
- supply current into AVCC + DVCC excluding external
- current consumption of active mode versus system frequency
- current consumption of active mode versus supply voltage
- Schmitt-trigger inputs -- Ports P1 and P2, RST/NMI, JTAG (TCK, TMS, TDI/TCLK, TDO/TDI)
- inputs Px.x, TAx
- leakage current
- outputs -- Ports P1 and P2
- output frequency
- wake-up LPM3
- RAM
- LCD
- USART0
- POR brownout, reset
- SVS (supply voltage supervisor/monitor)
- DCO
- crystal oscillator, LFXT1 oscillator
- SD16, power supply and recommended operating conditions
- SD16, analog input range
- SD16, analog performance (fSD16 = 1MHz, SD16OSRx = 256, SD16REFON = 1)
- SD16, built-in voltage reference
- SD16, built-in reference output buffer
- SD16, external reference input
- flash memory
- JTAG interface
- JTAG fuse
- Application Information
- input/output schematic
- Port P1, P1.0 to P1.1, input/output with Schmitt trigger
- Port P1, P1.2 to P1.7, input/output with Schmitt trigger
- Port P2, P2.0 to P2.1, input/output with Schmitt trigger
- Port P2, P2.2 to P2.5, input/output with Schmitt trigger
- Port P2, unbonded GPIOs P2.6 and P2.7
- JTAG pins (TMS, TCK, TDI/TCLK, TDO/TDI), input/output with Schmitt trigger or output
- JTAG fuse check mode
- input/output schematic
- Data Sheet Revision History
MSP430F42xA
MIXED SIGNAL MICROCONTROLLER
SLAS587 -- FEBRUARY 2008
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
operating modes
The MSP430 has one active mode and five software-selectable low-power modes of operation. An interrupt
event can wake up the device from any of the five low-power modes, service the request, and restore back to
the low-power mode on return from the interrupt program.
The following six operating modes can be configured by software:
D Active mode (AM)
-- All clocks are active.
D Low-power mode 0 (LPM0)
-- CPU is disabled.
ACLK and SMCLK remain active, MCLK is available to modules.
FLL+ loop control remains active.
D Low-power mode 1 (LPM1)
-- CPU is disabled.
ACLK and SMCLK remain active, MCLK is available to modules.
FLL+ loop control is disabled.
D Low-power mode 2 (LPM2)
-- CPU is disabled.
MCLK, FLL+ loop control, and DCOCLK are disabled.
DCO dc generator remains enabled.
ACLK remains active.
D Low-power mode 3 (LPM3)
-- CPU is disabled.
MCLK, FLL+ loop control, and DCOCLK are disabled.
DCO dc generator is disabled.
ACLK remains active.
D Low-power mode 4 (LPM4)
-- CPU is disabled.
ACLK is disabled.
MCLK, FLL+ loop control, and DCOCLK are disabled.
DCO dc generator is disabled.
Crystal oscillator is stopped.