Z86L79 Datasheet, PDF (42/58 Pages) Zilog, Inc. – Low-Voltage Microcontroller

Z86L79/80
Low-Voltage Microcontroller
FUNCTIONAL DESCRIPTION (Continued)
SMR (0F) 0B
D7 D6 D5 D4 D3 D2 D1 D0
SCLK/TCLK Divide-by-16
0 OFF **
1 ON
External Clock DIvide By 2
0 SCLK/TCLK = XTAL/2*
1 SCLK/TCLK = XTAL
Stop-Mode Recovery Source
000 POR Only*
001 Reserved
010 P31
0 11 P32
100 P33
101 P27
11 0 P2 NOR 0-3
111 P2 NOR 0-7
Stop Delay
0 OFF
1 ON*
Stop Recovery Level
0 Low*
1 High
Stop Flag
0 POR*
1 Stop Recovery**
* Default Setting After Reset
** Default Setting After Reset and Stop-Mode Recovery
Figure 34. Stop-Mode Recovery Register
Zilog
OSC
SMR, D1
÷2
3-42
÷16
SMR, D0
SCLK
TCLK
Figure 35. SCLK Circuit
PRELIMINARY
DS97LVO0601