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LC87F1HC4A_0812 Fiches technique(PDF) 10 Page - Sanyo Semicon Device

No de pièce LC87F1HC4A_0812
Description  8-bit 1-chip Microcontroller with USB-host controller
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Fabricant  SANYO [Sanyo Semicon Device]
Site Internet  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC87F1HC4A_0812 Fiches technique(HTML) 10 Page - Sanyo Semicon Device

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LC87F1HC4A
No.A0955-10/27
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
Option type
Output type
Pull-up resistor
1
CMOS
Programmable (Note 1)
P00 to P07
1 bit
2
Nch-open drain
No
1
CMOS
Programmable
P10 to P17
P20 to P27
P30 to P34
1 bit
2
Nch-open drain
Programmable
P70
-
No
Nch-open drain
Programmable
P71 to P73
-
No
CMOS
Programmable
PWM0, PWM1
-
No
CMOS
No
UHD+, UHD-
-
No
CMOS
No
XT1
-
No
Input only
No
XT2
-
No
32.768kHz crystal resonator output (N channel open
drain when in general-purpose output mode)
No
Note 1: Programmable pull-up resistors for port 0 are controlled in 4 bit units (P00 to 03, P04 to 07).
Power Pin Treatment
Connect the IC as shown below to minimize the noise input to the VDD1 pin. and extend the backup period. Be sure to
electrically short the VSS1, VSS2, and VSS3 pins.
Example 1: When the microcontroller is in the backup state in the HOLD mode, the power to sustain the high level of
output ports is supplied by their backup capacitors.
Example 2: The high level output at ports is not sustained and unstable in the HOLD backup mode.
VSS1 VSS2 VSS3
VDD1
VDD2
VDD3
Power
supply
For backup
LSI
LSI
VSS1VSS2VSS3
VDD1
VDD2
VDD3
Power
supply
For backup


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