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
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
Port C
PC0 to PC1
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)
TEST
I/O
• TEST pin
• Used to communicate with on-chip debugger.
• Connects an external 100kΩ pull-down resistor.
RESB
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
P00 to P07
P60 to P62
P10 to P17
P20 to P25
P30 to P37
PC0
Option Selected in
Units of
1 bit
CMOS
Output Type
Able to program special functions’ output type from CMOS
output or Nch-opendrain
-
N-channel open drain (32.768kHz crystal oscillator input)
Pull-up Resistor
Programmable
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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