Z87233 Datasheet, PDF (49/71 Pages) Zilog, Inc. – CMOS Z8-R MCU Consumer Controller Processor

Z87233
CMOS Z8“ MCU Consumer Controller Processor
43
Table 31. Expanded Register File Registers—Reset States (Continued)
D7
D6
D5
D4
D3
D2
D1
D0
0Eh
Reserved
0Fh
WDTMR*
X
X
X
0
1
1
0
1
Note: *Not reset with a Stop-Mode Recovery.
Note: **Not reset with a Stop-Mode Recovery except Bit D7.
Port Configuration Register
The Port Configuration Register, PCON, controls the configurations of Ports 0, 2,
and 3. WRITE and reset states for bits D7–D0 are listed in Table 32.
Table 32. Port Configuration Register—PCON 00h/R0 Bank Fh: WRITE ONLY
Bit
D7
D6 D5
D4
D3
D2
D1
D0
R/W
W
W
W
W
W
W
W
W
Reset
1
1
1
1
1
1
1
0
Note: W = Write.
Bit
Position
D7
Bit
Field
Oscillator
D6
Port 3 I/O
D5
Port 2 I/O
D4
Reserved
D3
Port 0 I/O
D2
Port 0 I/O
Reset
R/W State Description
W
1
Low-EMI Oscillator
0: Low EMI
1: Standard
W
1
Port 3
0: Low EMI
1: Standard
W
1
Port 2
0: Low EMI
1: Standard
W
1
Reserved
1: Reserved must be "1"
W
1
Port 0†
0: Low EMI
1: Standard
W
1
Port 0
0: Open-Drain
1: Push-Pull Active
PS022701-0104