Z8FMC16100 Datasheet, PDF (45/402 Pages) Zilog, Inc. – Z8 Encore-R Motor Control Flash MCUs

Z8FMC16100 Series Flash MCU
Product Specification
23
Reset and Stop-Mode Recovery
The Reset Controller within the Z8FMC16100 Series Flash MCU controls RESET and
Stop-Mode Recovery operation. In typical operation, the following events cause a RESET
to occur:
• Power-On Reset (POR)
• Voltage Brown-Out (VBO)
• Watch-Dog Timer time-out (when configured via the WDT_RES Option Bit to initiate a
Reset)
• External RESET pin assertion
• On-Chip Debugger initiated RESET (OCDCTL[0] set to 1)
• Fault detect logic
When the Z8FMC16100 Series Flash MCU is in STOP mode, a Stop-Mode Recovery is
initiated by either of the following:
• Watch-Dog Timer time-out
• GPIO port input pin transition on an enabled Stop-Mode Recovery source
Reset Types
The Z8FMC16100 Series Flash MCU provides two different types of reset operation (Sys-
tem Reset and Stop-Mode Recovery). The type of reset is a function of both the current
operating mode of the Z8FMC16100 Series Flash MCU and the source of the reset. Table
6 lists the types of reset and their operating characteristics.
Table 6. Reset and Stop-Mode Recovery Characteristics and Latency
Reset Type
System Reset
Stop-Mode
Recovery
Reset Characteristics and Latency
Peripheral Control
Registers
eZ8 CPU Reset Latency (Delay)
Reset (as
applicable)
RESET A minimum of 66 Internal Precision Oscillator cycles.
Unaffected, except Reset
RSTSRC and
OSCCTL registers
A minimum of 66 Internal Precision Oscillator cycles.
PS024604-1005
PRELIMINARY
Reset Types