lc5876 Sanyo Semiconductor Corporation, lc5876 Datasheet - Page 5

• Manufacturer Part Number: lc5876
• Description: On-chip Eprom Microcomputer 4-bit Single Chip Microprocessor With Lcd Driver, 12 Kbytes Of Eprom And 1 Kbit Of Ram On-chip
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
SO1
SO2
SO3
SO4
N1
N2
N3
N4
INT
RES
TST
Seg1,
Seg2 to
Seg35
Pin
Output
Output
Input
Input
Input
I/O
I/O
QFC-80
Pin No.
45 to
44,
10
39
40
41
42
43
78
7
8
9
6
5
I/O ports
Function: The same as pins A1 to A4
Pins SO1 to SO3 area also used for the serial interface.
• Use of these pins in serial mode can be selected under program
• Pin functions: SO1: Serial input pin
The serial clock pin can be switched between internal and external,
and between rising edge output and falling edge output.
Output-only ports
• Output pins used to output data from RAM
• An alarm signal can be output from pin N4. (Note that this is only
• An alarm signal modulated at 1, 2 or 4 kHz can be output. (These
• A carrier signal can be output from N3. (Note that this is only when
Input ports
• External interrupt request inputs
• Input pins used to read data into RAM
• Input detection can be performed on either rising or falling edges.
• Built-in pull-up/pull-down resistors
LSI reset input
• The LC58E7008 resets on a high level input
Note: • An external resistor is required.
Test input
Connect to V
• LCD panel drive/general-purpose output
• LCD/general-purpose output control is handled by the segment PLA,
• These pins support output latch control on reset and in standby
• Arbitrary combinations of LCD drive and general-purpose outputs can
control.
when the N4 output latch is low.)
frequencies are output when ø0 is 32.768 kHz.)
the N3 output latch is low.)
— LCD panel drive
— General-purpose output mode
and thus program control is not required.
states when the oscillators are stopped.
be used.
I
II 1/2 bias – 1/2 duty
III 1/2 bias – 1/3 duty
IV 1/2 bias – 1/4 duty
V 1/3 bias – 1/3 duty
VI 1/3 bias – 1/4 duty
Types I to V can be specified as mask options.
I
II P-channel open drain
III N-channel open drain
Types I to III can be specified as mask options.
• The reset pulse must be at least 200 µs.
STATIC
CMOS
SS
SO2: Serial output pin
SO3: Serial clock pin
in normal operation.
Function
LC58E76
• Transistors to hold
• Selection of either
• Internal serial clock
• Pin N1 to N4
• Pin N1 to N4
• Transistors to hold
• Selection of either
• Signal conversion
* Only when the
• LCD driver/
• LCD drive type
• General-purpose
• Output latch control
a low or high level
pull-up or pull-
down resistors
divisor selection
I
II 1/2
III 1/4
output circuit type:
I
output level
I
II Low level
a low or high level
pull-up or pull-
down resistors
(rising/falling)
selection
general-purpose
output switching
switching
— STATIC
— 1/2 bias – 1/2
— 1/2 bias – 1/3
— 1/2 bias – 1/4
— 1/3 bias – 1/3
— 1/3 bias – 1/4
output circuit
switching
— CMOS
— P-channel
— N-channel
in standby modes
input resistor open
specification is
selected
1/1
N-channel
open drain
High level
duty
duty
duty
duty
duty
open drain
open drain
Option
Continued on next page.
The same as K1 to
K4
The output levels on
pins N1 to N4 can be
specified as an option.
• LCD drive
• General-purpose
Note: When a
• These pins go to
All segments off
outputs
Low level
the V
during the reset
period.
combination of
LCD drive and
general- pur-
pose outputs,
the output
state is either
all segments
off or low level.
At reset
No. 4434-5/17
SS
level