LC86E5032
Pin name
PORT8
P80 to P87
RES
TEST1
XT1/P74
XT2
CF1
CF2
I/O
Function description
I
• 8-bit input port
• Other functions
AD input port (8 port pins)
I
Reset pin
O Test pin
Should be left open.
I
• Input pin for 32.768 kHz crystal oscillation
• Other function : Input port P74
When not used, connect to VDD.
O Output pin for 32.768 kHz crystal oscillation
When not used, should be left open.
I
Input pin for ceramic resonator oscillation
O Output pin for ceramic resonator oscillation
• All port options can be specified in bit units.
*1 Memory select input for data security
*2 Output enable input
*3 Chip enable input
*4 TA ➝ PROM control signal input
*5 A14 ➝ Address input
• Connect as shown in the following figure to reduce noise into VDD pin.
Short-circuit the VDD pin to the VDDVPP pin.
Short-circuit the VSS pin to the VSS pin.
Option
Power
supply
LSI
VDD
VV
DD PP
VSS
VSS
Function in PROM mode
No. 5632-9/21