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3823 Datasheet(PDF) 1 Page - Renesas Technology Corp

Part No. 3823
Description  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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Maker  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
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DESCRIPTION
The 3823 group is the 8-bit microcomputer based on the 740 fam-
ily core technology.
The 3823 group has the LCD drive control circuit, an 8-channel A/
D converter, a serial interface, a watchdog timer, a ROM correc-
tion function, and as additional functions.
The various microcomputers in the 3823 group include variations
of internal memory size and packaging. For details, refer to the
section on part numbering.
FEATURES
●Basic machine-language instructions ...................................... 71
●The minimum instruction execution time ........................... 0.4 µs
(at f(XIN) = 10 MHz, High-speed mode)
●Memory size
ROM ............................................................... 16 K to 60 K bytes
RAM ................................................................. 640 to 2560 bytes
●ROM correction function .............................. 32 bytes ✕ 2 blocks
●Watchdog timer .............................................................. 8-bit ✕ 1
●Programmable input/output ports ............................................ 49
●Input ports .................................................................................. 5
●Software pull-up/pull-down resistors (Ports P0-P7 except port P40)
●Interrupts ................................................. 17 sources, 16 vectors
(includes key input interrupt)
●Key Input Interrupt (Key-on Wake-Up) ...................................... 8
●Timers ........................................................... 8-bit ✕ 3, 16-bit ✕ 2
●Serial interface ............ 8-bit ✕ 1 (UART or Clock-synchronized)
●A/D converter ............ 10-bit ✕ 8 channels or 8-bit ✕ 8 channels
●LCD drive control circuit
Bias ................................................................................... 1/2, 1/3
Duty ........................................................................... 1/2, 1/3, 1/4
Common output .......................................................................... 4
Segment output ........................................................................ 32
●Main clock generating circuits .............. Built-in feedback resistor
(connect to external ceramic resonator or quartz-crystal oscillator)
●Sub-clock generating circuits
(connect to external quartz-crystal oscillator or on-chip oscillator)
●Power source voltage
In frequency/2 mode (f(XIN) ≤ 10 MHz) ................... 4.5 to 5.5 V
In frequency/2 mode (f(XIN) ≤ 8 MHz) ..................... 4.0 to 5.5 V
In frequency/4 mode (f(XIN) ≤ 10 MHz) ................... 2.5 to 5.5 V
In frequency/4 mode (f(XIN) ≤ 8 MHz) ..................... 2.0 to 5.5 V
In frequency/4 mode (f(XIN) ≤ 5 MHz) ..................... 1.8 to 5.5 V
In frequency/8 mode (f(XIN) ≤ 10 MHz) ................... 2.5 to 5.5 V
In frequency/8 mode (f(XIN) ≤ 8 MHz) ..................... 2.0 to 5.5 V
In frequency/8 mode (f(XIN) ≤ 5 MHz) ..................... 1.8 to 5.5 V
In low-speed mode .................................................... 1.8 to 5.5 V
●Power dissipation
In frequency/2 mode ............................................... 18 mW (std.)
(at f(XIN) = 8 MHz, Vcc = 5 V, Ta = 25 °C)
In low-speed mode at XCIN ................................................ 18 µW (std.)
(at f(XIN) stopped, f(XCIN) = 32 kHz, Vcc = 2.5 V, Ta = 25 °C)
In low-speed mode at on-chip oscillator .................. 35 µW (std.)
(at f(XIN) stopped, f(XCIN) = stopped, Vcc = 2.5 V, Ta = 25 °C)
●Operating temperature range .................................. – 20 to 85 °C
APPLICATIONS
Camera, audio equipment, household appliances, consumer elec-
tronics, etc.
3823 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
REJ03B0146-0202
Rev.2.02
Jun.19.2007
Rev.2.02
Jun 19, 2007
page 1 of 73
REJ03B0146-0202




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