Z86C83 Zilog., Z86C83 Datasheet - Page 21

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

Z86C83/C84
Z8
PIN FUNCTIONS (Continued)
Port Configuration Register (PCON). The PCON con-
figures the ports individually for comparator output on Port
3. The PCON Register is located in the Expanded Register
File at Bank F, location 00 (Figure 13).
Bit 0 multiplexes comparator AN1 Output at P34. A "1"
this location brings the comparator output to P34
21
®
MCU Microcontrollers
P31
P34 OUT
REF (P33)
PCON (F) 00
D7 D6 D5 D4 D3 D2 D1 D0
Figure 13. Port Configuration Register (PCON) (Write-Only)
+
-
PCON
* Default setting from Stop-Mode Recovery,
AN1
Power-On Reset, and any WDT Reset.
Figure 14. Port 3 P34 Output Configuration
D0
0 P34 Standard Output
1 P34 Comparator Output
Normal
*
Reset Condition
in
(Figure 14), and a "0" puts P34 into its standard I/O
configuration.
Note: Only comparator output AN1 is multiplexed to a
Port 3 output. Comparator AN2 output is not connected to
any pins. Note that the PCON Register is reset upon the
occurrence of a WDT RESET (not in Stop Mode), and
Power-On Reset (POR).
*
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
P34
*
PAD
DS96DZ80203