Block Diagram
DIN
CLK
CS
RES
VDDP0
P00
P07
VSSP0
LC709006A
Serial/parallel converter/shift register
I/O control/output register
Port 1 I/O buffer
DOUT
VDD
VSS
VDDP2
P27
P20
VSSP2
Pin Description
Pin Name
VSS
VSSP0
VSSP2
VDD
VDDP0
VDDP1
VDDP2
Port 0
P00 to P07
Port 1
P10 to P17
Port 2
P20 to P27
I/O
Description
-
• - power supply pin
• VSS is the power supply pin for blocks other than I/O ports (P00 to P27).
• VSSP0 is the power supply pin for port pins P00 to P07.
• VSSP2 is the power supply pin for port pins P10 to P17 and P20 to P27.
-
• + power supply pin
• VDD is the power supply pin for blocks other than I/O ports (P00 to P27).
• VDDP0 is the power supply pin for port pins P00 to P07.
• VDDP1 is the power supply pin for port pins P10 to P17.
• VDDP2 is the power supply pin for port pins P20 to P27.
(Notes)
• VDDP0 must not be set higher than VDD l (VDDP0≤VDD).
• VDDP1 must not be set lower than VDD (VDDP1≥VDD).
• VDDP2 must not be set lower than VDD (VDDP2≥VDD).
I/O • 8-bit I/O port
• I/O specifiable in 1 bit units.
• CMOS/Nch-open drain specifiable in 1 bit units.
• Output voltage variable in 1 port units according to VDDP0 voltage.
I/O • 8-bit I/O port
• I/O specifiable in 1 bit units.
• CMOS/Nch-open drain specifiable in 1 bit units.
• Output voltage variable in 1 port units according to VDDP1 voltage.
I/O • 8-bit I/O port
• I/O specifiable in 1 bit units.
• CMOS/Nch-open drain specifiable in 1 bit units.
• Output voltage variable in 1 port units according to VDDP2 voltage.
I/O Type
Reset Time
Output:
Hi-Z
CMOS/Nch-OD
Input: TTL
Output:
Hi-Z
CMOS/Nch-OD
Input: TTL
Output:
Hi-Z
CMOS/Nch-OD
Input: TTL
Continued on next page.
No.8265-7/14