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No. 4435-6/29
LC587008, 587006, 587004
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Pin I/O
QIP-80
Function Option At reset
Pin No.
SO1 7
SO2
I/O
8
SO3 9
SO4 10
N1 39
N2
Output
40
N3 41
N4 42
INT Input 6
RES Input 5
TST Input 43
I/O ports
Function: The same as for 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
control.
• Pin functions: SO1: Serial input pin
SO2: Serial output pin
SO3: Serial clock pin
The serial clock pin can be switched between internal and external,
and between rising edge output and falling edge output.
• Transistors to hold
a low or high level
• Selection of either
pull-up or pulldown resistors
• Internal serial clock
divisor selection
I 1/1
II 1/2
III 1/4
The same as for K1
to K4
The output levels on
pins N1 to N4 can be
specified as an option.
• Pins N1 to N4
output circuit type:
I CMOS
II N-channel
open drain
• Pins N1 to N4
output level
I High level
II Low level
• Transistors to hold
a low or high level
• Selection of either
pull-up or pulldown resistors
• Signal conversion
(rising/falling)
selection
* Only when the
input resistor open
specification is
selected
• LCD driver/
general-purpose
output switching
• LCD drive type
switching
— STATIC
— 1/2 bias – 1/2
duty
— 1/2 bias – 1/3
duty
— 1/2 bias – 1/4
duty
— 1/3 bias – 1/3
duty
— 1/3 bias – 1/4
duty
• General-purpose
output circuit
switching
— CMOS
— P-channel
open drain
— N-channel
open drain
• Output latch control
in standby modes
• LCD drive
— All segments on
— All segments off
*: Determined by
mask options
• General purpose
outputs
— High level
— Low level
*: Determined by
mask options
Note: When a
combination of
LCD drive and
generalpurpose
outputs, the
output state is
either:
— All lit/high level
— All off/low level.
• These pins go to
the static drive
mode during the
reset period.
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
when the N4 output latch is low.)
• An alarm signal modulated at 1, 2 or 4 kHz can be output. (These
frequencies are output when ø0 is 32.768 kHz.)
• A carrier signal can be output from N3. (Note that this is only when
the N3 output latch is low.)
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 internal reset input
• The reset input level can be selected to be either high or low.
• Built-in pull-up/pull-down resistors
• Note: The reset pulse must be at least 500 µs.
Test input
• QIP80 products: Connect to V
SS
.
• Chip products: Leave open or connect to V
SS
.
• LCD panel drive/general-purpose output
— LCD panel drive
I STATIC
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.
— General-purpose output mode
I CMOS
II P-channel open drain
III N-channel open drain
Types I to III can be specified as mask options.
• LCD/general-purpose output control is handled by the segment PLA,
and thus program control is not required.
• These pins support output latch control on reset and in standby
states when the oscillators are stopped.
• Arbitrary combinations of LCD drive and general-purpose outputs can
be used.
Seg1,
Seg2 to
Seg35
Output
44,
45 to
78