3851 Group (Built-in 24 KB or more ROM)
REJ03B0066-0101Z
Rev.1.01
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Oct 15, 2003
DESCRIPTION
Clock generating circuit ................................... Built-in 2 circuits
(connect to external ceramic resonator or quartz-crystal oscillator)
Power source voltage
The 3851 group (built-in 24 KB or more ROM) is the 8-bit micro-
computer based on the 740 family core technology.
The 3851 group (built-in 24 KB or more ROM) is designed for the
household products and office automation equipment and includes
In high-speed mode ................................................. 4.0 to 5.5 V
(at 8 MHz oscillation frequency)
2
serial I/O functions, 8-bit timer, I C-BUS interface, and A-D con-
In middle-speed mode ............................................. 2.7 to 5.5 V
(at 8 MHz oscillation frequency)
verter.
In low-speed mode................................................... 2.7 to 5.5 V
(at 32 kHz oscillation frequency)
FEATURES
Basic machine-language instructions ..................................... 71
Minimum instruction execution time ................................. 0.5 µs
(at 8 MHz oscillation frequency)
Power dissipation
In high-speed mode .........................................................34 mW
(at 8 MHz oscillation frequency, at 5 V power source voltage)
In low-speed mode
Memory size
ROM ................................................................ 24K to 32K bytes
RAM....................................................................640 to 1K bytes
Programmable input/output ports ........................................... 34
Interrupts ................................................ 17 sources, 16 vectors
Timers............................................................................ 8-bit X 4
Serial I/O1 .................... 8-bit X 1(UART or Clock-synchronized)
Serial I/O2 ................................... 8-bit X 1(Clock-synchronized)
Except M38517F8FP/SP ................................................. 60 µW
M38517F8FP/SP............................................................ 450 µW
(at 32 kHz oscillation frequency, at 3 V power source voltage)
Operating temperature range ..................................–20 to 85°C
APPLICATION
Office automation equipment, FA equipment, Household products,
2
Multi-master I C-BUS interface .................................. 1 channel
Consumer electronics, etc.
PWM .............................................................................. 8-bit X 1
A-D converter ...............................................10-bit X 5 channels
Watchdog timer ........................................................... 16-bit X 1
PIN CONFIGURATION (TOP VIEW)
1
42
41
40
39
38
37
36
P3
P3
P3
P3
P3
0
1
2
3
4
/AN
/AN
/AN
/AN
/AN
0
1
2
3
4
V
CC
2
3
4
5
6
7
V
REF
AVSS
P4
4
/INT
3
/PWM
/SCMP2
/INT
/INT
/CNTR
/SRDY1
/SCLK1
/TxD
P4
3
/INT
2
P4
P4
2
1
0
1
P0
P0
P0
P0
P0
P0
P0
P0
P1
P1
P1
P1
P1
P1
P1
P1
0/SIN2
1
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
/SOUT2
/SCLK2
/SRDY2
P4
0
8
35
34
33
32
31
30
29
28
27
26
25
24
23
22
P2
7
/CNTR
0
9
P2
/SCL
6
10
11
12
13
14
15
16
17
18
19
20
21
P2
P2
5
2
4
/SDA
P2 /SCL
P2
2
/RxD
3
1
1
2
/SDA
/(LED
/(LED
/(LED
/(LED
/(LED
/(LED
/(LED
/(LED
0
1
2
3
4
5
6
7
)
)
)
)
)
)
)
)
CNVSS
P2 /XCIN
P2 /XCOUT
1
0
RESET
X
IN
OUT
SS
X
V
Package type : FP ........................... 42P2R-A/E (42-pin plastic-molded SSOP)
Package type : SP ........................... 42P4B (42-pin plastic-molded SDIP)
Fig. 1 M38517M8-XXXFP/SP pin configuration
Rev.1.01 Oct 15, 2003 page 1 of 89