LC877424A Datasheet, PDF (10/22 Pages) Sanyo Semicon Device – 8 Bit Single Chip Microcontroller Incorporating 48K/40K/32K/24K Byte ROM and 1536 byte RAM on Chip

LC877448A/40A/32A/24A
*Note 1: Connect as follows to reduce noise on VDD.
VSS1, VSS2 and VSS3 must be connected together and grounded.
*Note 2: The power supply for the internal memory is VDD1 but it uses the VDD3 as the power supply for ports.
When the VDD3 is not backed up, the port level does not become “H” even if the port latch is in the “H” level.
Therefore, when the VDD3 is not backed up and the port latch is “H” level, the port level is unstable in the
HOLD mode, and the back up time becomes shorter because the through current runs from VDD to GND in
the input buffer.
If VDD3 is not backed up, output “L” by the program or pull the port to “L” by the external circuit in the
HOLD mode so that the port level becomes “L” level and unnecessary current consumption is prevented.
Power
supply
LSI
VDD1
Back-up capacitors *2 _VDD2
VDD3
VSS1 VSS2 VSS3
Absolute Maximum Ratings / Ta=25°C, VSS1=VSS2=VSS3=0V
Parameter
Symbol
Pins
Conditions
V_DD [V]
min
typ
Supply voltage
VDD max
VDD1, VDD2, VDD3
VDD1=VDD2=VDD3
-0.3
Supply voltage
VLCD
V1 / PL4, V2 / PL5,
VDD1=VDD2=VDD3
-0.3
for LCD
V3 / PL6
Input voltage
VI
Port L
-0.3
XT1, XT2, CF1, RES
Input / Output
VIO1
•Port 0, 1, 3, 7, 8
-0.3
voltage
•Port A, B, C, D, E, F
[High level output current]
Peak output current IOPH1
Port 0, 1, 3
•CMOS output selected
-10
•Current at each pin
IOPH2
Port 71, 72, 73
Current at each pin
-3
IOPH3
Port A, B, C, D, E, F
Current at each pin
-5
Total output current ∑IOAH1
Port 0, 1, 32, 33, 34, 35 Total of all pins
-40
∑IOAH2
Port 30, 31
Total of all pins
-10
∑IOAH3
Port 7
Total of all pins
-5
∑IOAH4
Port A, B, C
Total of all pins
-25
∑IOAH5
Port D, E, F
Total of all pins
-25
[Low level output current]
Peak output current IOPL1
Port 0, 1, 32 to 35
Current at each pin
IOPL2
Port 30, 31
Current at each pin
IOPL3
Port 7, 8
Current at each pin
IOPL4
Port A, B, C, D, E, F
Current at each pin
Total output current ∑IOAL1
Port 0, 1, 32, 33, 34, 35 Total of all pins
∑IOAL2
Port 30, 31
Total of all pins
∑IOAL3
Port 7, 8
Total of all pins
∑IOAL4
Port A, B, C
Total of all pins
∑IOAL5
Port D, E, F
Total of all pins
Maximum power
consumption
Pd max
QIP100E
TQFP100
Ta = -30 to +70°C
Operating
Topr
-30
temperature range
Storage
Tstg
-55
temperature range
max
unit
+7.0
VDD
VDD
V
+0.3
VDD
+0.3
mA
20
30
5
15
60 mA
60
20
40
40
471
mW
362
+70
°C
+125
No.7776-10/22