Z90251 ZILOG [Zilog, Inc.], Z90251 Datasheet - Page 29

• Manufacturer Part Number: Z90251
• Description: eZVision 200 Television Controllers with OSD
• Manufacturer: ZILOG [Zilog, Inc.]

SMR D4 D3 D2
Stop-Mode Recovery Edge
Select (SMR)
VDD
0
P63
P62
0
SMR D4 D3 D2
0
Note:
Figure 7
Stop Mode Recovery Level
Select (bit 6)
Cold or Warm Start (bit 7)
0
0
If P62 is used as an SMR source, the digital mode of operation
must be selected before entering Stop Mode.
0
1
0
Stop Mode Recovery Source/Level Select
1
P27
SMR D4 D3 D2
1
0
1
P20
P23
A 1 in this bit position indicates that a High level
on any one of the recovery sources wakes the
microcontroller from Stop Mode. A 0 indicates
Low-level recovery. The default is 0 on POR.
This bit is set by the device when Stop Mode is
entered. A 0 in this bit (cold) indicates that the
device reset by POR/WDT Reset. A 1 in this bit
(warm) indicates that the device awakens by a
SMR source.
32 KB Television Controller with OSD
SMR D4 D3 D2
1
1
P20
P27
0
To IRQ1
SMR D4 D3 D2
PS001301-0800
1
1
To POR
1
Reset
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