3826 Group (A version)
REJ03B0029-0200
Rev.2.00
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
2006.05.24
Timers ............................................................ 8-bit ✕ 3, 16-bit ✕ 2
Serial interface
DESCRIPTION
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The 3826 group (A version) is the 8-bit microcomputer based on
Serial I/O1...................... 8-bit ✕ 1 (UART or Clock-synchronous)
Serial I/O2 .................................... 8-bit ✕ 1 (Clock-synchronous)
PWM output .................................................................... 8-bit ✕ 1
A/D converter ............. 10-bit ✕ 8 channels or 8-bit ✕ 8 channels
D/A converter .................................................. 8-bit ✕ 2 channels
(used as DTMF and CTCSS function)
the 740 family core technology.
The 3826 group (A version) has the LCD drive control circuit, an 8-
channel A/D converter, D/A converter, serial interface and PWM as
additional functions.
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The various microcomputers in the 3826 group (A version) include
variations of internal memory size and packaging. For details, re-
fer to the section on part numbering.
LCD drive control circuit
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Bias ......................................................................... 1/2, 1/3
Duty .................................................................. 1/2, 1/3, 1/4
Common output ................................................................ 4
Segment output .............................................................. 40
2 Clock generating circuits
For details on availability of microcomputers in the 3826 group (A
version), refer the section on group expansion.
FEATURES
Basic machine-language instructions ....................................... 71
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(connect to external ceramic resonator or quartz-crystal oscillator)
Watchdog timer ............................................................. 14-bit ✕ 1
Power source voltage
The minimum instruction execution time ............................ 0.4 µs
(at 10 MHz oscillation frequency)
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Memory size
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In high-speed mode (f(XIN) = 10 MHz) ................... 4.5 V to 5.5 V
In high-speed mode (f(XIN) = 8 MHz) ..................... 4.0 V to 5.5 V
In middle-speed mode (f(XIN) = 6 MHz) ................. 1.8 V to 5.5 V
In low-speed mode.................................................. 1.8 V to 5.5 V
Power dissipation
ROM ................................................................ 48 K to 60 K bytes
RAM ............................................................... 1536 to 2560 bytes
Programmable input/output ports ............................................. 55
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Software pull-up resistors .................................................... Built-in
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Output ports ................................................................................. 8
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In high-speed mode ................................................... Typ. 28 mW
(f(XIN) = 10 MHz, VCC = 5 V, Ta = 25 °C)
Input ports .................................................................................... 1
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Interrupts .................................................. 17 sources, 16 vectors
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In low-speed mode......................................................Typ. 27 µW
(f(XIN) = stop, f(XCIN) = 32 kHz, VCC = 3 V, Ta = 25 °C)
Operating temperature range ................................... – 20 to 85°C
External ................ 7 sources (includes key input interrupt)
Internal ................................................................ 9 sources
Software ................................................................ 1 source
APPLICATIONS
Camera, household appliances, consumer electronics, etc.
Rev.2.00 May. 24, 2006 page 1 of 90
REJ03B0028-0200
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