Z86C83 Zilog., Z86C83 Datasheet - Page 40

• Manufacturer Part Number: Z86C83
• Description: Z8 MCU MICROCONTROLLERS
• Manufacturer: Zilog.

Z86C83/C84
Z8
EXPANDED REGISTER FILE CONTROL REGISTERS
40
SMR2 (0F) DH
Note: Not used in conjunction with SMR Source
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5
Note: Not used in conjunction with SMR2
Source
* Default Setting After RESET
** Default setting after RESET and
®
MCU Microcontrollers
Stop-Mode Recovery
Figure 48. Watch-Dog Timer Mode Register 2
(Write-Only, except Bit 7 which is Read-Only)
(
Figure 47. Stop-Mode Recovery Register
)
D4 D3 D2 D1 D0
Stop-Mode Recovery Source 2
00 POR only*
01 AND P20,P21,P22,P23
10 AND P20,P21,P22,P23,
Reserved (Must be 0)
External Clock Divide-by-2
0 SCLK/TCLK = XTAL/2*
1 SCLK/TCLK = XTAL
Stop Delay
0 OFF
1 ON
Stop Recovery Level
0 Low *
1 High
SCLK/TCLK Divide-by-16
0 OFF* *
1 ON
Stop-Mode Recovery Source
000 POR Only and/or External Reset*
001 Reserved
010 P31
011
100 P33
101 P27
110 P2 NOR 0-3
111 P2 NOR 0-7
Stop Flag (Read-Only)
0 POR
1 Stop Recovery
P24,P25,P26,P27
P32
*
*
PCON (F) 00
D7 D6 D5 D4 D3 D2 D1 D0
WDTMR (F) 0F
D7 D6 D5 D4 D3 D2 D1 D0
Figure 50. Port Configuration Register (PCON)
Figure 49. Watch-Dog Timer Mode Register
*
† XTAL=SCLK/TCLK shown
Default setting after RESET
* Default setting from Stop-Mode Recovery,
Power-On Reset, and any WDT Reset.
(Write-Only)
(Write-Only)
Comparator
0 Port 0 Open-Drain
1 Port 0 Push-Pull*
Reserved (Must be 1.)
Reserved (Must be 1.)
Output Port 3
0 P34 Standard Output
1 P34 Comparator Output
WDT TAP
WDT During HALT
0 OFF
1 ON
WDT During STOP
0 OFF
1 ON
XTAL1/INT RC Select for WDT
0 On-Board RC
1 XTAL
Reserved (Must be 0)
00
01
10
11
*
*
4096 SCLK
256
512
1024 SCLK
DS96DZ80203
SCLK
SCLK *
*
*