ZLP128ICE01ZEM Zilog, ZLP128ICE01ZEM Datasheet - Page 31

• Manufacturer Part Number: ZLP128ICE01ZEM
• Description: EMULATOR CRIMZON Z8 ZLP12840
• Manufacturer: Zilog

Specifications of ZLP128ICE01ZEM

• Interface Type: RS-232, Ethernet, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3829

Table 15. Port 3 Register (P3)
PS024410-0108
Bit
Field
Reset
R/W
Address
Bit
Position Value Description
[7]
[6]
[5]
[4]
Port 3 Register
Write
Write
Write
Write
0
1
0
1
0
1
0
1
The Port 3 Register allows read access to port pins P33 through P30 and write access to
the port pins P37 through P34
R/W
P37
7
0
Port 3, pin 7 Output—Writes to this bit do not affect the pin state if write-only register
bit PCON[0] has been written with a 1, which configures P37 as the Comparator 1 or
IR Amplifier output.
P37 asserted Low if PCON[0]=0.
P37 asserted High if PCON[0]=0.
A read returns the last value written to this bit.
Port 3, pin 6 Output—Writes to this bit do not affect the pin state if register bits
CTR1[7:6]=01, which configures P36 as the Timer 8 and Timer 16 combined logic
output.
P36 asserted Low.
P36 asserted High.
A read returns the last value written to this bit.
Port 3, pin 5 Output—Writes to this bit do not affect the pin state if register bit
CTR2[0]=1, which configures P35 as the Timer 16 output.
P35 asserted Low.
P35 asserted High.
A read returns the last value written to this bit.
Port 3, pin 4 Output—Writes to this bit do not affect the pin state if write only register bit
PCON[0]=1, which configures P34 as Comparator 2 output, or register bit CTR0[0]=1,
which configures P34 as Timer 8 output.
P34 asserted Low.
P34 asserted High.
A read returns the last value written to this bit.
R/W
P36
6
0
R/W
P35
P R E L I M I N A R Y
5
0
Banks 0–3: 03h; Linear: 003h
(Table
R/W
P34
4
0
15).
R/W
P33
X
3
R/W
P32
X
2
Product Specification
I/O Port Pin Functions
R/W
P31
X
1
R/W
P30
X
0
25