TO DRIVE OR NOT TO DRIVE EXTERNAL PINS WHILE IN LOW POWER STOP MODE
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2002-Feb-28
The Motorola Modular Microcontroller Family MCUs support a Low Power STOP (LPSTOP) mode. In Low Power STOP mode the MCU goes to it's lowest power consumption state under the CPU con- trol. In this LPSTOP mode, the external bus is not used by the MCU since the CPU is not available to run external bus cycles. To reduce the MCU's cur- rent drain, internal and external clocks of the MCU are stopped when the MCU enters the LPSTOP mode.