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LC651204N Datasheet(PDF) 6 Page - Sanyo Semicon Device

Part No. LC651204N
Description  4-Bit Single-Chip Microcontrollers for Small-Scale Control Applications
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Maker  SANYO [Sanyo Semicon Device]
Homepage  http://www.ssdc-jp.com/eng/
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 6 page
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Pin Functions
No. 5190-6/35
Pin
VDD
VSS
OSC1
OSC2
PA0 to
PA3
PC0 to
PC3
PD0 to
PD3
Pin no.
1
1
1
1
4
4
4
I/O
Input
Output
I/O
I/O
I/O
Function
Power supply
• System clock oscillator
Connect an external ceramic oscillator
element to these pins
• Leave OSC2 open if an external clock
is supplied.
• I/O port A0 to A3
Input in 4-bit units using the IP
instruction
Output in 4-bit units using the OP
instruction
Port bits can be tested in bit units using
the BP and BNP instructions.
Port bits can be set or cleared in bit
units using the SPB and RPB
instructions.
• PA3 is used for standby control.
• Applications must be designed so that
no chattering (e.g. switch bounce)
occurs on the PA3 pin during a HALT
instruction execution cycle.
• I/O port C0 to C3
The PC0 to PC3 pin functions are
identical to those of the PA0 to 3 pins.*
• High or low can be specified as the
output at reset as an option.
Note: These pins do not have a
standby control function.
• I/O port D0 to D3
The PD0 to PD3 pin functions and
options are identical to those of the
PC0 to PC3 pins.
Options
(1) External clock
(2) Two-pin ceramic oscillator
(3) Divider circuit option
1. No divider circuit
2. Divide-by-three circuit
3. Divide-by-four circuit
(1) Output open drain
(2) Built-in pull-up resistor
• Options (1) and (2) can be
specified in bit units.
(1) Output open drain
(2) Built-in pull-up resistor
(3) High-level output at reset
(4) Low-level output at reset
• Options (1) and (2) can be
specified in bit units.
• Option (3) and (4) are
specified in 4-bit units.
The same as PC0 to PC3.
State at reset
High-level output
(i.e., the output
n-channel
transistor will be
off.)
• High-level
output
• Low-level
output
(Depending on
the option
specified.)
The same as
PC0 to PC3.
Handling when unused
Open drain output select
the options, connect to
VSS.
The same as PA0 to
PA3.
The same as PA0 to
PA3.
LC651204N/F/L, LC651202N/F/L
Continued on next page.




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