z8f1601 ZiLOG Semiconductor, z8f1601 Datasheet - Page 49

• Manufacturer Part Number: z8f1601
• Description: Z8 Encore!? Microcontroller With Flash Memory And 10-bit A/d Converter
• Manufacturer: ZiLOG Semiconductor

Low-Power Modes
Overview
Stop Mode
Halt Mode
PS017609-0803
The Z8F640x family products contain power-saving features. The highest level of power
reduction is provided by Stop mode. The next level of power reduction is provided by the
Halt mode.
Execution of the eZ8 CPU’s STOP instruction places the Z8F640x family device into Stop
mode. In Stop mode, the operating characteristics are:
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To minimize current in Stop mode, all GPIO pins that are configured as digital inputs must
be driven to one of the supply rails (V
brought out of Stop mode using Stop Mode Recovery. For more information on STOP
Mode Recovery refer to the Reset and Stop Mode Recovery chapter.
Execution of the eZ8 CPU’s HALT instruction places the Z8F640x family device into Halt
mode. In Halt mode, the operating characteristics are:
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Primary crystal oscillator is stopped
System clock is stopped
eZ8 CPU is stopped
Program counter (PC) stops incrementing
Watch-Dog Timer’s internal RC oscillator continues to operate
If enabled, the Watch-Dog Timer continues to operate
All other on-chip peripherals are idle
Primary crystal oscillator is enabled and continues to operate
System clock is enabled and continues to operate
eZ8 CPU is idle
Program counter (PC) stops incrementing
CC
or GND). The Z8F640x family device can be
Low-Power Modes
Z8 Encore!
®
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