SLAA380B December 2007 – September 2018 MSP430F2616 , MSP430F2617 , MSP430F2618 , MSP430F2619
For the MSP430™ MCUs, the maximum frequency at which the CPU can operate depends on the supply voltage. This specification can be found in the recommended operating conditions of each device-specific data sheet. In general, it can be said that this specification differs for the MSP430F16x and MSP430F261x family of microcontrollers. An MSP430F261x device can always operate under the same operating conditions in terms of supply voltage and CPU clock frequency (MCLK) as an MSP430F16x device. However, if a designer who migrates an existing design to an MSP430F261x device wants to take advantage of the increased maximum clock frequency, it is important to closely review the recommended operating conditions in the MSP430F261x device data sheet. [4]
It is of extreme importance that this relationship is also observed during power-ramp scenarios. Violating this maximum frequency and voltage dependency can result in unpredictable code execution. Note that both MSP430F16x and MSP430F261x MCUs have a built-in SVS module that can be used to ensure that this operating condition is not violated.