Note : External resisters (Rf, Rd) are required when X’ tal oscillation is used.
(4) Ports
- Input/output ports : 3 ports (16 terminals : port 1, 7, 8)
Input/output port programmable in a bit
- 15V withstand Input/output ports : 2 ports (16 terminals)
Input/output port programmable nibble unit : 1 port (8 terminals : port 0)
(When the N-channel open drain output is selected, the data in a bit can be inputted.)
Input/output port programmable in a bit : 1 port (8 terminals : port 3)
- Input port : 2 ports (6 terminals : port 7, 8)
- VFD output port : 52 terminals
Large current output for digit : 16 terminals
Pull-down resistor option available
- Other function
Input/output port : 2 ports (12 terminals : port F, G)
Input port : 3 ports (24 terminals : port C, D, E)
(5) VFD automatic display controller
- Segment/digit output pattern programmable
Any segment/digit combination available
VFD parallel-drive available
- 16-step dimmer function available
(6) AD converter
- 8-channels × 8-bit AD converter
(7) Serial interface
- 1-channel × 16-bit serial interface circuits
- 1-channel × 8-bit serial interface circuits
- LSB first/MSB first function available
- Internal 8-bit baud-rate generator in common with two serial interface circuits
- SIO automatic transmission available (2-32 byte data can be transmitted with program automatically and
continuously.)
Microcontroller allows 3 levels of interrupt ; low level, high level, and highest level of multiplex interrupt. It can
specify a low level or a high level interrupt priority from INT2/T0L through port 0 (i. e. the above interrupt
number fro m three thro ugh ten). I t can also spe cify a low leve l or the high est level in terrup t priori ty to INT 0 and
INT1.
(13) Subroutine stack levels
- 128 levels (Max.) : Stack area included in RAM area
No.6700-3/21
Page 4
LC866548/40/32/28/24A
(14) Multiplication and division
- 16 bit × 8 bit (7 instruction cycle times)
- 16 bit ÷ 8 bit (7 instruction cycle times)
(15) Three oscillation circuits
- On-chip RC oscillation circuit used for the system clock
- On-chip CF oscillation circuit used for the system clock
- On-chip Crystal oscillation circuit used for the system clock and for time-base clock
Note : External resisters (Rf, Rd) are required
(16) Standby function
- HALT mode function
The HALT mode is used to reduce the power dissipation. In this operation mode, the program execution is stopped.
This operation mode can be released by the interrupt request signals or the initial system reset request signal.
- HOLD mode function
The HOLD mode is used to stop all the oscillations ;
RC (internal), CF and Crystal oscillations. This mode can be released by the following operations.
• Reset terminal (
RES
) set to low level.
• Input a assigned level to P70/INT0/T0I N or P 71/INT1/T0IN terminal.
Frequency range of the system clock Voltage range Clock Divider Note
15kHz to 3MHz 1/1 Can no t use 1/2 divider
30kHz to 6MHz 1/1, 1/2
Internal RC oscillation
Pin Name I/O Function Description Option
VSS1, 2 Power pin (-) *1
VDD1,2,3,4 Power pin (+) *1
VP Power pin (+) for the VFD output pull-down resist
Port 0
P00 - P07
Port 1 •8-bit Input/output port
P10 - P17
Port 3
P30 - P37
Port 7 •4-bit input/output port
P70 - P73
P74
- P75
Port 8
P80 - P83
P84 - P87
S0/T0 to
S6/T6
I/O •8-bit input/output port
Input/output in nibble units
•Input for port 0 interrupt
•Input for HOLD release
•15V withstand at N-channel open drain output
I/O
Input/output can be specified in bit unit.
•Other pin functions
P10
I/O •8-bit input/output port
Input/output in bit unit
•15V withstand at N-channel open drain output
I/O
Input/output in bit unit
I
•2-bit input port
•Other pin function
P70
•Interrupt recei ved form, vector address
rising falling rising/
INT0
INT1
INT2
INT3
•4-bit input/output port
I
Input/output in bit unit
I/O
•4-bit input port
•Other function
AD input port (8 port pins)
O Output for VF D display controller
segment/timing in common
SIO0 data output
P11
SIO0 data input/bus input/output
P12
SIO0 clock input/output
P13
SIO1 data output
P14
SIO1 data input/bus input/output
P15
SIO1 clock input/output
P16
Buzzer output
P17
Timer1 output (PWM0 output)
INT0 input/HOLD release /Nch-Tr.
output for watchdog timer
P71
INT1 input/HOLD release input
P72
INT2 input/timer 0 event input
P73
INT3 input with noise filter/timer 0
event input
P74
Input pin XT1 for 32.768kHz crystal
resonator oscillation
P75
Output pin XT2 for 32.768kHz
crystal resonator oscillation
segment/timing with internal pull-down
resistor in common
•Internal pull-down resistor output
•Output for VFD display controller segment
•Other function
S16 : High voltage input port PC0
S17 : High voltage input port PC1
S18 : High voltage input port PC2
S19 : High voltage input port PC3
S20 : High voltage input port PC4
S21 : High voltage input port PC5
S22 : High voltage input port PC6
S23 : High voltage input port PC7
S24 : High voltage input port PD0
S25 : High voltage input port PD1
S26 : High voltage input port PD2
S27 : High voltage input port PD3
S28 : High voltage input port PD4
S29 : High voltage input port PD5
S30 : High voltage input port PD6
S31 : High voltage input port PD7
•Output for VFD display controller segment
•Other function
S32 : High voltage input port PE0
S33 : High voltage input port PE1
S34 : High voltage input port PE2
S35 : High voltage input port PE3
S36 : High voltage input port PE4
S37 : High voltage input port PE5
S38 : High voltage input port PE6
S39 : High voltage input port PE7
S40 : High voltage I/O port PF0
S41 : High voltage I/O port PF1
S42 : High voltage I/O port PF2
S43 : High voltage I/O port PF3
S44 : High voltage I/O port PF4
S45 : High voltage I/O port PF5
S46 : High voltage I/O port PF6
S47 : High voltage I/O port PF7
•Output for VFD display controller segment
•Other function
S48 : High voltage I/O port PG0
S49 : High voltage I/O port PG1
S50 : High voltage I/O port PG2
S51 : High voltage I/O port PG3
S0/T0 to S6/T6,
S16 to S51 without pull-down
resistor
S16 to S51 with
pull-down resistor
•Ports 70, 71, 72,
73, 75
•
RES
IOL=1.6mA 4.5 - 6.0 0.4
IOL=1.6mA 4.5 - 6.0 0.4
OFF
•VOUT=VSS
•Output P-ch Tr.
OFF
•VOUT=VDD-40V
OFF
•Using as input
ports
•Output P-ch Tr.
OFF
•VOUT=3V
•Vp=-30V
•Vp=-30V
Output disable 4.5 - 6.0 0.1
•Unmeasurement
terminals for the
input are set to
VSS level.
•Ta=25°C
Ratings
VDD[V] min. typ. max.
4.5 - 6.0 -1 Output off-
4.5 - 6.0 -30
4.5 - 6.0 200
5.0 60 100 200
5.0 60 100 200
VDD
4.5 - 6.0 10 pF
unit
V
A
µ
kΩ
V
No.6700-14/21
Page 15
LC866548/40/32/28/24A
4. Serial Input/Output Characteristics at Ta=-30°C to +70°C, VSS1=VSS2=0V
Parameter Symbol Pins Conditions
Cycle
Low Level
pulse width
Input clock
High Level
pulse width
Cycle
Serial clock
Low Level
pulse width
High Level
Output clock
pulse width
Data set up ti me
Data hold time
Serial input
Output delay
time
(Serial clock is
external clock)
Output delay
time
Serial output
(Serial clock is
internal clock)
tCKCY(1) 2
tCKL(1) 1
tCKH(1)
tCKCY(2) 2
tCKL(2)
tCKH(2)
tICK 0.1
tCKI
tCKO(1)
tCKO(2)
•SCK0
•SCK1
•SCK0
•SCK1
SI0 SI1
SB0 SB1
SO0 SO1
SB0 SB1
Refer to figure 5. 4.5 - 6.0
•Use pull- up
resistor (1kΩ)
when open drain
output.
•Refer to figure 5.
•Data set-up to
SCK0, 1.
•Data hold from
SCK0, 1.
•Refer to figure 5.
•Use pull- up
resistor (1kΩ)
when open drain
output.
•Data hold from
SCK0, 1
•Refer to figure 5.
Ratings
VDD[V] min. typ. max.
1
4.5 - 6.0
4.5 - 6.0
0.1
4.5 - 6.0
5. Pulse Input Conditions at Ta=-30°C to +70°C, VSS1=VSS2=0V
Parameter Symbol Pins Conditions
High/low level
pulse width
tPIH(1)
tPIL(1)
tPIH(2)
tPIL(2)
tPIH(3)
tPIL(3)
tPIH(4)
tPIL(4)
tPIL(5)
•INT0, INT1
•INT2/T0IN
INT3/T0IN
(The noise
rejection clock is
select to 1/1.)
INT3/T0IN
(The noise
rejection clock is
select to 1/16.)
INT3/T0IN
(The noise
rejection clock is
select to 1/64.)
Reset acceptable 4.5 - 6.0 200
RES
•Interrupt acceptable
•Timer0-countable
•Interrupt accept able
•Timer0-countable
•Interrupt accept able
•Timer0-countable
•Interrupt accept able
•Timer0-countable
Ratings
VDD[V] min. typ. max.
4.5 - 6.0 1
4.5 - 6.0 2
4.5 - 6.0 32
4.5 - 6.0 128
1/2tCKCY
1/2tCKCY
7/12tCYC
+0.2
1/3tCYC
+0.2
unit
tCYC
s
µ
unit
tCYC
s
µ
No.6700-15/21
Page 16
LC866548/40/32/28/24A
6. AD Converter Characteristics at Ta=-30°C to + 70°C, VSS1=VSS2=0V
Parameter Symbol Pins Conditions
Resolution N 4.5 - 6.0 8 bit
Absolute
precision
(Note2)
Conversion
time
Analog input
voltage range
input current
ET 4.5 - 6.0 ±1.5 LSB
tCAD
VAIN 4.5 - 6.0 VSS VDD V
IAINH VAIN=VDD 4.5 - 6.0 1 Analog port
IAINL
AN0 - AN7
AD conversion time
tCYC
=16
×
(ADCR2=0) *Note3
AD conversion time
tCYC
=32
×
(ADCR2=1) *Note3
VAIN=VSS 4.5 - 6.0 -1
Ratings
VDD[V] min. typ. max.
4.5 - 6.0 15.68
(tCYC
=0.98µs)
4.5 - 6.0 31.36
(tCYC
=0.98µs)
65.28
(tCYC
=4.08µs)
130.56
(tCYC
=4.08µs)
unit
s
µ
A
µ
(Note 2) Absolute precision excepts quantizing error (±1/2 LSB).
(Note 3) The conversion time means the time from executing the AD conversion instruction to setting the complete digital
conversion value to the register.
7. Current Dissipation Characteristics at Ta=-30°C to +70°C, VSS1=VSS2=0V
Parameter Symbol Pins Conditions
Current
dissipation
during basic
operation
(Note 4)
IDDOP(1) •FmCF=6MHz
IDDOP(2) •FmCF=3MHz
IDDOP(3) •FmCF=0Hz
IDDOP(4)
Ceramic resonator oscillation
•Internal RC oscillation stops.
•FsXtal=32.768kHz
Crystal oscillation
•System clock : CF oscillation
•1/1 divided
Ceramic resonator oscillation
•Internal RC oscillation stops.
•FsXtal=32.768kHz
Crystal oscillation
•System clock : CF oscillation
•1/2 divided
(when oscillation stops)
•FsXtal=32.768kHz
Crystal oscillation
•System clock : RC oscillation
•1/2 divided
•FmCF=0Hz
(when oscillation stops)
•FsXtal=32.768kHz
Crystal oscillation
•System clock :
Crystal oscillation
•Internal RC oscillation stops.
•1/2 divided
Ratings
VDD[V] min. typ. max.
4.5 - 6.0 10 25
4.5 - 6.0 3 9
4.5 - 6.0 0.7 3.4
4.5 - 6.0 35 130 µA
unit
mA
No.6700-16/21
Page 17
LC866548/40/32/28/24A
Parameter Symbol Pins Conditions
Current
dissipation
HALT mode
(Note 4)
Current
dissipation
HOLD
mode
(Note 4)
IDDHALT(1) •HALT mode
•FmCF=6MHz
Ceramic resonator oscillation
•FsXtal=32.768kHz
Crystal oscillation
•Internal RC oscillation stops.
•System clock : CF oscillation
•1/1 divided
IDDHALT(2) •HALT mode
•FmCF=3MHz
Ceramic resonator oscillation
•FsXtal=32.768kHz
Crystal oscillation
•Internal RC oscillation stops.
•System clock : CF oscillation
•1/2 divided
IDDHALT(3) •HALT mode
•FmCF=0Hz
(when oscillation stops)
•FsXtal=32.768kHz
Crystal oscillation
•System clock : RC oscilaltion
•1/2 divided
IDDHALT(4) •HALT mode
•FmCF=0Hz
(when oscillation stops)
•FsXtal=32.768kHz
Crystal oscillation
•System clock :
Crystal oscilaltion
•Internal RC oscillation stops.
•1/2 divided
IDDHOLD(1) HOLD mode
Ratings
VDD[V] min. typ. max.
4.5 - 6.0 5 14
4.5 - 6.0 2.2 7
4.5 - 6.0 400 1600
4.5 - 6.0 25 100
4.5 - 6.0 0.05 30
(Note 4) The currents of the output transistors and the pull-up MOS transistors are ignored.