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Renesas Electronics Components Datasheet

M38857M Datasheet

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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To all our customers
Regarding the change of names mentioned in the document, such as Mitsubishi
Electric and Mitsubishi XX, to Renesas Technology Corp.
The semiconductor operations of Hitachi and Mitsubishi Electric were transferred to Renesas
Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog
and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.)
Accordingly, although Mitsubishi Electric, Mitsubishi Electric Corporation, Mitsubishi
Semiconductors, and other Mitsubishi brand names are mentioned in the document, these names
have in fact all been changed to Renesas Technology Corp. Thank you for your understanding.
Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been
made to the contents of the document, and these changes do not constitute any alteration to the
contents of the document itself.
Note : Mitsubishi Electric will continue the business operations of high frequency & optical devices
and power devices.
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DataShee
Renesas Technology Corp.
Customer Support Dept.
April 1, 2003
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Renesas Electronics Components Datasheet

M38857M Datasheet

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
3885 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
et4U.com
GENERAL DESCRIPTION
qComparator circuit ...................................................... 8 channels
The 3885 group is the 8-bit microcomputer based on the 740 fam-
qClock generating circuit ..................................... Built-in 2 circuits
ily core technology.
(connect to external ceramic resonator or quartz-crystal oscillator)
The 3885 group is designed for Keyboard Controller for the note
qPower source voltage ................................................ 3.0 to 3.6 V
book PC.
qPower dissipation
The multi-master I2C-bus interface can be added by option.
In high-speed mode .......................................................... 20 mW
FEATURES
(at 8 MHz oscillation frequency, at 3.3 V power source voltage)
In low-speed mode ......................................................... 330 mW
<Microcomputer mode>
(at 32 kHz oscillation frequency, at 3.3 V power source voltage)
qBasic machine-language instructions ...................................... 71
qOperating temperature range .................................... –20 to 85°C
qMinimum instruction execution time .................................. 0.5 µs
(at 8 MHz oscillation frequency)
<Flash memory mode>
qMemory size
qSupply voltage ................................................. VCC = 3.3 ± 0.3V
ROM ................................................................. 32K to 60K bytes
qProgram/Erase voltage ................................. VPP = 5.0 V ± 10 %
RAM ............................................................... 1024 to 2048 bytes
qProgramming method ...................... Programming in unit of byte
qProgrammable input/output ports ............................................ 72
qErasing method
qSoftware pull-up transistors ....................................................... 8
Parallel I/O mode
qInterrupts ................................................. 22 sources, 16 vectors
CPU reprogramming mode
qTimers ............................................................................. 8-bit 4
qProgram/Erase control by software command
qWatchdog timer ............................................................ 16-bit 1
qNumber of times for programming/erasing ............................ 100
qPWM output .................................................................. 14-bit 2
qOperating temperature range (at programming/erasing)
qSerial I/O ....................... 8-bit 1(UART or Clock-synchronized)
........................................................................ Room temperature
qMulti-master I2C bus interface (option) ........................ 1 channel
qLPC interface .............................................................. 2 channels
qSerialized IRQ .................................................................. 3 factor
APPLICATION
qA-D converter ............................................... 10-bit 8 channels
Note book PC
qD-A converter ................................................. 8-bit 2 cDhaantnaeSlsheet4U.com
DataShee
PIN CONFIGURATION (TOP VIEW)
P31/PWM10
P30/PWM00
P87/SERIRQ
P86/LCLK
P85/LRESET
P84/LFRAME
P83/LAD3
P82/LAD2
P81/LAD1
P80/LAD0
VCC
VREF
AVSS
P67/AN7
P66/AN6
P65/AN5
P64/AN4
P63/AN3
P62/AN2
P61/AN1
61 40
62 39
63 38
64 37
65 36
66 35
67
68
M38857M8-XXXHP
34
33
69 32
70 M38858MC-XXXHP 31
71 30
72 M38859M8-XXXHP 29
73 28
74 M38859FFHP 27
75 26
76 25
77 24
78 23
79 22
80 21
P16
P17
P20/CMPREF
P21
P22
P23
P24(LED0)
P25(LED1)
P26(LED2)
P27(LED3)
VSS
XOUT
XIN
P40/XCOUT
P41/XCIN
RESET
CNVSS
P42/INT0
P43/INT1
P44/RXD
VPP
DataSheet4FiUg..c1omPin configuration
Package type : 80P6Q-A
: Flash memory version
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1


Part Number M38857M
Description SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Maker Renesas Technology
Total Page 30 Pages
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