Features: *Basic machine-language instructions............................................ 71
*The minimum instruction execution time.................................. 0.5 s
(at 8 MHz oscillation frequency)
*Memory size
ROM ..................................................................... 16 K to 24 K bytes
RAM ....................................................................... 384 to 512 bytes
*Programmable input/output ports (Ports P2P6)......................... 30
*Segment output pin/Input port (Port P0) ....................................... 8
*Software pull-up/pull-down resistor........................ Ports P0, P2P6
*Interrupts .................................................. ...13 sources, 13 vectors
(includes key input interrupt)
*Timers ...................................................................8-bit*3, 16-bit*2
*Serial I/O ............................................. 8-bit*1 (Clock-synchronous)
*A-D converter......................................................... 8-bit*8 channels
(It can be used in the low-speed mode.)
*LCD drive control circuit
Bias ..............................................................................1/1, 1/2, 1/3
Duty .................................................................. Static, 1/2, 1/3, 1/4
Common output ............................................................................ 4
Segment output........................................................................... 25
*Main clock generating circuit ......................................................... 1
(connect to external ceramic resonator or built-in ring oscillator)
*Sub clock generating circuit........................................................... 1
(connect to external quartz-crystal oscillator)
*Power source voltage
In high-speed mode (f(XIN) 8.0 MHz)..................... ..4.0 to 5.5 V
In middle-speed mode (Mask ROM version: f(XIN) 6.0 MHz)
...................................................................................... 1.8 to 5.5 V
In middle-speed mode (One Time PROM version: f(XIN) 6.0 MHz)
...................................................................................... 2.2 to 5.5 V
In low-speed mode (Mask ROM version).................. .....1.8 to 5.5 V
In low-speed mode (One Time PROM version) ............. 2.2 to 5.5 V
*Power dissipation (Mask ROM version)
In high-speed mode (frequency divided by 2)...............Typ. 15 mW
(VCC = 5 V, f(XIN) = 8 MHz , Ta = 25 °C)
In low-speed mode........................................................Typ. 18 W
(VCC = 2.5 V, f(XIN) = stop , f(XCIN) = 32 kHz , Ta = 25 °C)
*Operating temperature range .................................. 20 to 85°C
ApplicationHousehold appliances, consumer electronics, etc.Pinout
Specifications
| Symbol |
Parameter |
Conditions |
Ratings |
Unit |
| VCC |
Power source voltage |
All voltages are based on Vss.
Output transistors are cut off. |
0.3 to 6.5 |
V |
| VI |
Input voltage P00P07, P20P27, P30P34,
P44P47, P50P57, P60P64 |
0.3 to VCC+0.3 |
V |
| VI |
Input voltage VL1 |
0.3 to VL2 |
V |
| VI |
Input voltage VL2 |
VL1 to VL3 |
V |
| VI |
Input voltage VL3 |
VL2 to 6.5 |
V |
| VI |
Input voltage RESET, XIN |
0.3 to VCC+0.3 |
V |
| VI |
Input voltage AN0AN3 |
0.3 to VCC+0.3 |
V |
| VI |
Input voltage CNVSS (Mask ROM version) |
0.3 to VCC+0.3 |
V |
| VI |
Input voltage CNVSS (One Time PROM version) |
0.3 to 13 |
V |
| VO |
Output voltageP20P27 |
At output port |
0.3 to VCC+0.3 |
V |
| At segment output |
0.3 to VL3+0.3 |
| VO |
Output voltageP30P34, P44P47, P50P57, P60P64 |
|
0.3 to VCC+0.3 |
V |
| VO |
Output voltage SEG0SEG24 |
0.3 to VL3+0.3 |
V |
| VO |
Output voltageXOUT |
0.3 to VCC+0.3 |
V |
| Pd |
Power dissipation |
Ta = 25°C |
300 |
mW |
| Topr |
Operating temperature |
|
20 to 85 |
°C |
| Tstg |
Storage temperature |
|
40 to 125 |
°C |
DescriptionThe 38C1 group is the 8-bit microcomputer based on the 740 fam-ily core technology.
The 38C1 group has the LCD drive control circuit, an 8-channel A-D converter, and serial I/O as additional functions.
The various microcomputers in the 38C1 group include variations of internal memory size and packaging. For details, refer to the section on part numbering.
38C1 Data Sheet
