lc5876 Sanyo Semiconductor Corporation, lc5876 Datasheet - Page 4

• 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

Pin Functions
V
V
V
V
CUP1
CUP2
CFIN
CFOUT
XTIN
XTOUT
S1
S2
S3
S4
K1
K2
K3
K4
M1
M2
M3
M4
A1
A2
A3
A4
P1
P2
P3
P4
DD
SS
DD
DD
1
2
Pin
Output
Output
Input
Input
Input
I/O
I/O
I/O
I/O
I/O
—
—
—
—
—
—
QFC-80
Pin No.
24
23
22
21
25
26
20
19
27
28
29
30
31
32
33
34
35
36
37
38
11
12
13
14
15
16
17
18
3
4
Power supply
LCD drive power supply
Switching pin used to supply the LCD drive voltage to the VDD1 and
VDD2 pins
• Connect a nonpolar capacitor between CUP1 and CUP2 when 1/2 or
• Leave open when a bias other than 1/2 or 1/3 is used.
System clock oscillator connections
• Ceramic resonator connection (CF specifications)
• RC component connection (RC specifications)
• External signal input pin (CFOUT is left open)
This oscillator is stopped by the execution of a STOP or SLOW
instruction.
Reference calculation (clock specifications, LCD alternation frequency),
system clock oscillator
• 32 kHz crystal resonator connection
• 65 kHz crystal resonator connection
This oscillator is stopped by the execution of a STOP instruction.
Input-only ports
• Input pins used to read data into RAM
• Built-in 7.8 ms and 1.95 ms chatter exclusion circuits
• Built-in pull-up/pull-down resistors
Note: The 7.8 ms and 1.95 ms times are the times when ø0 is
I/O ports
• Input pins used to read data into RAM
• Output pins used to output data from RAM
• Built-in 7.8 ms and 1.95 ms input-mode chatter exclusion circuits. The
Note: The 7.8 ms and 1.95 ms times are the times when ø0 is
I/O ports
• Input pins used to read data into RAM
• Output pins used to output data from RAM
• M4 is used as the external clock input pin in TM2 mode 3.
• Built-in pull-up/pull-down resistors
I/O ports
• Input pins used to read data into RAM
• Output pins used to output data from RAM
• Built-in pull-up/pull-down resistors
I/O ports
Function: The same as pins A1 to A4
V
V
V
V
1/3 bias is used.
selection of 7.8 or 1.95 ms is linked to that for the S ports.
* The minimum period for the external clock is twice the cycle time.
DD
DD
DD
SS
1
2
32.768 kHz.
32.768 kHz.
NON
Function
1/1 bias
LC58E76
1/2 bias
1/3 bias
• CF specifications
• Not used
• 32k specifications
• 65k specifications
• 38k specifications
• Not used
• Transistors to hold
• Selection of either
• Transistors to hold
• Selection of either
The same as K1 to
K4
The same as K1 to
K4
The same as K1 to
K4
a low or high level
pull-up or pull-
down resistors
a low or high level
pull-up or pull-
down resistors
Option
Continued on next page.
• The pull-up or pull-
Note: These pins go
• The pull-up or pull-
Note: These pins go
• Input mode
• Output latch data is
The same as K1 to
K4
The same as K1 to
K4
The same as K1 to
K4
down resistors are
on.
down resistors are
on.
set high.
to the floating
state when
reset is cleared.
to the floating
state when
reset is cleared.
At reset
No. 4434-4/17