LC88F5LA4ACS Datasheet, PDF (10/33 Pages) Sanyo Semicon Device – FROM 96K byte, RAM 6K byte on-chip 16-bit 1-chip Microcontroller

LC88F5LA4ACS
Continued from preceding page.
Pin Name
I/O
Description
Port 6
P60 to P62
Port C
PC0 to PC1
TEST
RESB
I/O
• 3-bit I/O port
• I/O specifiable in 1-bit units
• Pull-up resistors can be turned on and off in 1 bit units
• Pin functions
AN2 (P60) to AN3 (P61): AD converter input port
I/O
• 2-bit I/O port
• I/O specifiable in 1-bit units
• Pin functions
PC0: 32.768kHz crystal oscillator input (XT1)
PC1: 32.768kHz crystal oscillator output (XT2)
I/O
• TEST pin
• Used to communicate with on-chip debugger.
• Connects an external 100kΩ pull-down resistor.
I
Reset pin
CF1
I
Ceramic resonator input pin
CF2
O
Ceramic resonator output pin
Port Output Types
The table below lists the types of port outputs and the presence/absence of a pull-up resistor.
Data can be read into any input port even if it is in the output mode.
Port Name
Option Selected in
Units of
Output Type
Pull-up Resistor
P00 to P07
P60 to P62
1 bit
CMOS
Programmable
P10 to P17
P20 to P25
P30 to P37
PC0
Able to program special functions’ output type from CMOS
output or Nch-opendrain
-
N-channel open drain (32.768kHz crystal oscillator input)
None
PC1
-
Nch-open drain (32.768kHz crystal oscillator output)
None
* Make the following connection to minimize the noise input to the VDD1 pin and prolong the backup time.
* Power supply must be VDD1 ≤ VDD3.
* Be sure to electrically short the VSS1, VSS2 and VSSA pins.
Example 1: When data is being backed up in the HOLD mode, the H level signals to the output ports are fed by the
backup capacitors.
Power
supply
For Backup
LSI
VDD1
VDDA
Power
supply
VDD2
VDD3
VSS1 VSS2 VSSA
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