Renesas M38068E3XXXFP Single-chip 8-bit cmos microcomputer Datasheet

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.
Renesas Technology Corp.
Customer Support Dept.
April 1, 2003
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 3850 group is the 8-bit microcomputer based on the 740 family core technology.
The 3850 group is designed for the household products and office
automation equipment and includes serial I/O functions, 8-bit
timer, and A-D converter.
FEATURES
●Basic machine-language instructions ...................................... 71
●Minimum instruction execution time .................................. 0.5 µs
(at 8 MHz oscillation frequency)
●Memory size
ROM ................................................................... 8K to 24K bytes
RAM ..................................................................... 512 to 640 byte
●Programmable input/output ports ............................................ 34
●Interrupts ................................................. 14 sources, 14 vectors
●Timers ............................................................................. 8-bit ✕ 4
●Serial I/O ....................... 8-bit ✕ 1(UART or Clock-synchronized)
●PWM ............................................................................... 8-bit ✕ 1
●A-D converter ............................................... 10-bit ✕ 5 channels
●Watchdog timer ............................................................ 16-bit ✕ 1
●Clock generating circuit ..................................... Built-in 2 circuits
(connect to external ceramic resonator or quartz-crystal oscillator)
●Power source voltage
In high-speed mode .................................................. 4.0 to 5.5 V
(at 8 MHz oscillation frequency)
In high-speed mode .................................................. 2.7 to 5.5 V
(at 4 MHz oscillation frequency)
In middle-speed mode ............................................... 2.7 to 5.5 V
(at 8 MHz oscillation frequency)
In low-speed mode .................................................... 2.7 to 5.5 V
(at 32 kHz 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 ............................................................ 60 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,
Consumer electronics, etc.
PIN CONFIGURATION (TOP VIEW)
1
42
2
41
3
40
4
39
5
38
6
37
7
8
9
10
11
12
13
14
15
16
17
M38503M4-XXXFP
M38503M4-XXXSP
VCC
VREF
AVSS
P44/INT3/PWM
P43/INT2
P42/INT1
P41/INT0
P40/CNTR1
P27/CNTR0/SRDY
P26/SCLK
P25/TxD
P24/RxD
P23
P22
CNVSS
P21/XCIN
P20/XCOUT
RESET
XIN
XOUT
VSS
36
35
34
33
32
31
30
29
28
27
26
18
25
19
24
20
23
21
22
P30/AN0
P31/AN1
P32/AN2
P33/AN3
P34/AN4
P00
P01
P02
P03
P04
P05
P06
P07
P10
P11
P12
P13/(LED0)
P14/(LED1)
P15/(LED2)
P16/(LED3)
P17/(LED4)
Package type : FP ........................... 42P2R-A (42-pin plastic-molded SSOP)
Package type : SP ........................... 42P4B (42-pin shrink plastic-molded DIP)
Fig. 1 M38503M4-XXXFP/SP pin configuration
2
Fig. 2 Functional block diagram
XCIN
XCOUT
Sub-clock Sub-clock
input
output
AV SS
VREF
2 3
A-D
converter
(10)
PWM
(8)
Reset
Clock generating circuit
20
Main-clock
output
XOUT
Watchdog
timer
19
Main-clock
input
XIN
FUNCTIONAL BLOCK DIAGRAM
I/O port P4
4 5 6 7 8
P4(5)
RAM
INT0–
INT3
ROM
I/O port P3
38 39 40 41 42
P3(5)
21
VSS
PC H
SI/O(8)
C P U
1
VCC
PS
PC L
S
Y
X
A
18
RESET
CNTR 0
Reset input
P2(8)
CNTR 1
I/O port P2
XCOUT
XCIN
Prescaler Y(8)
Prescaler X(8)
Prescaler 12(8)
9 10 11 12 13 1416 17
15
CNVSS
I/O port P1
22 23 24 25 26 27 28 29
P1(8)
P0(8)
I/O port P0
30 31 32 33 34 35 36 37
Timer Y( 8 )
Timer X( 8 )
Timer 2( 8 )
Timer 1( 8 )
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
FUNCTIONAL BLOCK
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PIN DESCRIPTION
Table 1 Pin description
Pin
Name
VCC, VSS
Power source
CNV SS
CNVSS input
RESET
Reset input
XIN
Clock input
XOUT
Clock output
P00 –P07
I/O port P0
P10 –P17
I/O port P1
P20 /XCOUT
P21 /XCIN
P22
P23
P24 /RxD
P25 /TxD
P26/S CLK
I/O port P2
Functions
•Reset input pin for active “L.”
•Input and output pins for the clock generating circuit.
•Connect a ceramic resonator or quartz-crystal oscillator between the X IN and XOUT pins to set
the oscillation frequency.
•When an external clock is used, connect the clock source to the XIN pin and leave the XOUT
pin open.
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually programmed as either input or output.
•CMOS compatible input level.
•CMOS 3-state output structure.
•P1 3 to P17 (5 bits) are enabled to output large current for LED drive.
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•CMOS compatible input level.
•P20, P21, P24 to P27 : CMOS3-state output structure.
•P22, P23: N-channel open-drain structure.
P27 /CNTR0 /
SRDY
P30/AN 0–
P34 /AN4
Function except a port function
•Apply voltage of 2.7 V – 5.5 V to Vcc, and 0 V to Vss.
•This pin controls the operation mode of the chip.
•Normally connected to VSS .
• Sub-clock generating circuit I/O
pins (connect a resonator)
• Serial I/O function pin
• Serial I/O function pin/
Timer X function pin
I/O port P3
•8-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
• A-D converter input pin
•CMOS 3-state output structure.
P40 /CNTR1
P41 /INT0 –
P43/INT2
P44 /INT3 /PWM
I/O port P4
•8-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
•CMOS 3-state output structure.
• Timer Y function pin
• Interrupt input pins
• Interrupt input pin
• PWM output pin
3
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PART NUMBERING
Product M3850 3 M 4
XXX FP
Package type
FP : 42P2R-A package
SP : 42P4B package
SS : 42S1B-A package
ROM number
Omitted in some types.
ROM/PROM size
1 : 4096 bytes
2 : 8192 bytes
3 : 12288 bytes
4 : 16384 bytes
5 : 20480 bytes
6 : 24576 bytes
7 : 28672 bytes
8 : 32768 bytes
9 : 36864 bytes
A : 40960 bytes
B : 45056 bytes
C : 49152 bytes
D : 53248 bytes
E : 57344 bytes
F : 61440 bytes
The first 128 bytes and the last 2 bytes of ROM
are reserved areas ; they cannot be used.
Memory type
M : Mask ROM version
E : EPROM or One Time PROM version
RAM size
0 : 192 bytes
1 : 256 bytes
2 : 384 bytes
3 : 512 bytes
4 : 640 bytes
5 : 768 bytes
6 : 896 bytes
7 : 1024 bytes
8 : 1536 bytes
9 : 2048 bytes
Fig. 3 Part numbering
4
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
GROUP EXPANSION
Packages
Mitsubishi plans to expand the 3850 group as follows:
42P4B..........................................42-pin shrink plastic molded DIP
42P2R-A ............................................ 42-pin plastic molded SSOP
42S1B-A ................... 42-pin shrink ceramic DIP(EPROM version)
Memory Type
Support for mask ROM, One Time PROM, and EPROM versions.
Memory Size
ROM/PROM size ................................................... 8K to 24K bytes
RAM size .............................................................. 512 to 640 bytes
Memory Expansion Plan
ROM size (bytes)
48K
32K
28K
Under development
M38504M6/E6
24K
20K
Mass production
16K
M38503M4/E4
12K
Mass production
M38503M2
8K
128
192
256
384
512
640
768
896
1024
RAM size (bytes)
Products under development or planning : the development schedule and specification may be revised without notice.
Planning products may be stopped the development.
Fig. 4 Memory expansion plan
Currently planning products are listed below.
As of August 1998
Table 2 Support products
Product name
M38503M2-XXXSP
M38503M2-XXXFP
M38503M4-XXXSP
M38503E4-XXXSP
M38503E4SP
M38503E4SS
M38503M4-XXXFP
M38503E4-XXXFP
M38503E4FP
M38504M6-XXXSP
M38504E6-XXXSP
M38504E6SP
M38504E6SS
M38504M6-XXXFP
M38504E6-XXXFP
M38504E6FP
(P) ROM size (bytes)
ROM size for User in ( )
RAM size (bytes)
Package
8192
(8062)
512
42P4B
42P2R-A
42P4B
16384
(16254)
512
42S1B-A
42P2R-A
42P4B
32768
(32638)
640
42S1B-A
42P2R-A
Remarks
Mask ROM version
Mask ROM version
Mask ROM version
One Time PROM version
One Time PROM version (blank)
EPROM version (stock only replaced by M38504E6SS)
Mask ROM version
One Time PROM version
One Time PROM version (blank)
Mask ROM version
One Time PROM version
One Time PROM version (blank)
EPROM version
Mask ROM version
One Time PROM version
One Time PROM version (blank)
5
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
FUNCTIONAL DESCRIPTION
CENTRAL PROCESSING UNIT (CPU)
The 3850 group uses the standard 740 Family instruction set. Refer to the table of 740 Family addressing modes and machine
instructions or the 740 Family Software Manual for details on the
instruction set.
Machine-resident 740 Family instructions are as follows:
The FST and SLW instructions cannot be used.
The STP, WIT, MUL, and DIV instructions can be used.
[CPU Mode Register (CPUM)] 003B16
The CPU mode register contains the stack page selection bit, etc.
The CPU mode register is allocated at address 003B 16.
b7
b0
CPU mode register
(CPUM : address 003B16)
Processor mode bits
b1 b0
0 0 : Single-chip mode
0 1 :
1 0 : Not available
1 1 :
Stack page selection bit
0 : 0 page
1 : 1 page
Not used (return “1” when read)
(Do not write “0” to this bit.)
Port X C switch bit
0 : I/O port function (stop oscillating)
1 : X CIN–XCOUT oscillating function
Main clock (X IN–XOUT ) stop bit
0 : Oscillating
1 : Stopped
Main clock division ratio selection bits
b7 b6
0 0 : φ = f(X IN)/2 (high-speed mode)
0 1 : φ = f(X IN)/8 (middle-speed mode)
1 0 : φ = f(X CIN)/2 (low-speed mode)
1 1 : Not available
Fig. 5 Structure of CPU mode register
6
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MEMORY
Special Function Register (SFR) Area
The Special Function Register area in the zero page contains control registers such as I/O ports and timers.
Zero Page
Access to this area with only 2 bytes is possible in the zero page
addressing mode.
Special Page
RAM
RAM is used for data storage and for stack area of subroutine
calls and interrupts.
Access to this area with only 2 bytes is possible in the special
page addressing mode.
ROM
The first 128 bytes and the last 2 bytes of ROM are reserved for
device testing and the rest is user area for storing programs.
Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
RAM area
RAM size
(bytes)
Address
XXXX16
192
256
384
512
640
768
896
1024
1536
2048
3072
4032
00FF16
013F16
01BF16
023F16
02BF16
033F16
03BF16
043F16
063F16
083F16
0C3F16
0FFF16
000016
SFR area
Zero page
004016
RAM
010016
XXXX16
Reserved area
044016
Not used
YYYY16
ROM area
Reserved ROM area
ROM size
(bytes)
Address
YYYY16
Address
ZZZZ16
4096
8192
12288
16384
20480
24576
28672
32768
36864
40960
45056
49152
53248
57344
61440
F00016
E00016
D00016
C00016
B00016
A00016
900016
800016
700016
600016
500016
400016
300016
200016
100016
F08016
E08016
D08016
C08016
B08016
A08016
908016
808016
708016
608016
508016
408016
308016
208016
108016
(128 bytes)
ZZZZ16
ROM
FF0016
FFDC16
Interrupt vector area
FFFE16
FFFF16
Special page
Reserved ROM area
Fig. 6 Memory map diagram
7
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
000016
Port P0 (P0)
002016
Prescaler 12 (PRE12)
000116
Port P0 direction register (P0D)
002116
Timer 1 (T1)
000216
Port P1 (P1)
002216
Timer 2 (T2)
000316
Port P1 direction register (P1D)
002316
Timer XY mode register (TM)
000416
Port P2 (P2)
002416
Prescaler X (PREX)
000516
Port P2 direction register (P2D)
002516
Timer X (TX)
000616
Port P3 (P3)
002616
Prescaler Y (PREY)
000716
Port P3 direction register (P3D)
002716
Timer Y (TY)
Timer count source selection register (TCSS)
000816
Port P4 (P4)
002816
000916
Port P4 direction register (P4D)
002916
000A16
002A16
000B16
002B16
Reserved ✽
000C16
002C16
Reserved ✽
000D16
002D16
Reserved ✽
000E16
002E16
Reserved ✽
000F16
002F16
Reserved ✽
001016
003016
Reserved ✽
001116
003116
001216
003216
001316
003316
003416
A-D control register (ADCON)
001516
Reserved ✽
003516
A-D conversion low-order register (ADL)
001616
Reserved ✽
003616
A-D conversion high-order register (ADH)
001716
Reserved ✽
003716
001816
Transmit/Receive buffer register (TB/RB)
003816
MISRG
001916
Serial I/O status register (SIOSTS)
003916
Watchdog timer control register (WDTCON)
001A16
Serial I/O control register (SIOCON)
003A16
Interrupt edge selection register (INTEDGE)
001B16
UART control register (UARTCON)
003B16
CPU mode register (CPUM)
001C16
Baud rate generator (BRG)
003C16
Interrupt request register 1 (IREQ1)
001D16
PWM control register (PWMCON)
003D16
Interrupt request register 2 (IREQ2)
001E16
PWM prescaler (PREPWM)
003E16
Interrupt control register 1 (ICON1)
001F16
PWM register (PWM)
003F16
Interrupt control register 2 (ICON2)
001416
✽ Reserved : Do not write “1” to this address.
Fig. 7 Memory map of special function register (SFR)
8
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
I/O PORTS
The I/O ports have direction registers which determine the input/
output direction of each individual pin. Each bit in a direction register corresponds to one pin, and each pin can be set to be input
port or output port.
When “0” is written to the bit corresponding to a pin, that pin becomes an input pin. When “1” is written to that bit, that pin
becomes an output pin.
If data is read from a pin which is set to output, the value of the
port output latch is read, not the value of the pin itself. Pins set to
input are floating. If a pin set to input is written to, only the port
output latch is written to and the pin remains floating.
Table 3 I/O port function
Pin
Name
P00–P07
Port P0
P10 –P17
Port P1
Input/Output
CMOS compatible
input level
CMOS 3-state output
P20 /XCOUT
P21 /XCIN
Input/output,
individual
bits
P27 /CNTR0 /SRDY
CMOS compatible
input level
CMOS 3-state output
Port P3
P40 /CNTR1
P41 /INT0 –
P43 /INT2
P44 /INT3 /PWM
Related SFRs
Ref.No.
(1)
Sub-clock generating
circuit
CPU mode register
(2)
(3)
(4)
Port P2
P26 /SCLK
P30 /AN0–
P34 /AN4
Non-Port Function
CMOS compatible
input level
N-channel open-drain
output
P22
P23
P24 /RxD
P25 /TxD
I/O Structure
(5)
(6)
Serial I/O function I/O
Serial I/O control
register
Serial I/O function I/O
Serial I/O control
register
Serial I/O function I/O
Timer X function I/O
Serial I/O control
register
Timer XY mode register
(8)
A-D conversion input
A-D control register
(9)
Timer Y function I/O
Timer XY mode register
(10)
External interrupt input
Interrupt edge selection
register
(11)
Interrupt edge selection
register
PWM control register
(12)
Port P4
External interrupt input
PWM output
(7)
9
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(2) Port P20
(1) Port P0, P1
Port XC switch bit
Direction
register
Data bus
Direction
register
Port latch
Data bus
Port latch
Oscillator
Port P21
(3) Port P21
Port XC switch bit
Port XC switch bit
Direction
register
Data bus
(4) Port P22, P23
Port latch
Direction
register
Data bus
Port latch
Sub-clock generating circuit input
(5) Port P24
Serial I/O enable bit
Receive enable bit
(6) Port P25
Data bus
Direction
register
P-channel output disable bit
Port latch
Serial I/O enable bit
Transmit enable bit
Direction
register
Data bus
Port latch
Serial I/O input
(7) Port P26
Serial I/O output
Serial I/O clock
selection bit
Serial I/O enable bit
(8) Port P27
Serial I/O mode selection bit
Serial I/O enable bit
Pulse output mode
Serial I/O mode selection bit
Serial I/O enable bit
SRDY output enable bit
Direction
register
Data bus
Port latch
Direction
register
Data bus
Port latch
Serial clock output
External clock input
Pulse output mode
Serial ready output
Timer output
Fig. 8 Port block diagram (1)
10
CNTR0 interrupt
input
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(9) Port P30–P34
(10) Port P40
Direction
register
Direction
register
Data bus
Data bus
Port latch
Port latch
Pulse output mode
Timer output
CNTR1 interrupt input
A-D converter input
Analog input pin selection bit
(11) Port P41–P43
(12) Port P44
Direction
register
PWM output enable bit
Direction
register
Data bus
Port latch
Data bus
Port latch
Interrupt input
PWM output
Fig. 9 Port block diagram (2)
11
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
INTERRUPTS
■Notes
Interrupts occur by 14 sources among 14 sources: six external,
seven internal, and one software.
When the active edge of an external interrupt (INT0–INT3, CNTR0,
CNTR1) is set, the corresponding interrupt request bit may also be
set. Therefore, take the following sequence:
Interrupt Control
Each interrupt is controlled by an interrupt request bit, an interrupt
enable bit, and the interrupt disable flag except for the software interrupt set by the BRK instruction. An interrupt occurs if the
corresponding interrupt request and enable bits are “1” and the interrupt disable flag is “0”.
Interrupt enable bits can be set or cleared by software.
Interrupt request bits can be cleared by software, but cannot be
set by software.
The BRK instruction cannot be disabled with any flag or bit. The I
(interrupt disable) flag disables all interrupts except the BRK instruction interrupt.
When several interrupts occur at the same time, the interrupts are
received according to priority.
Interrupt Operation
By acceptance of an interrupt, the following operations are automatically performed:
1. The contents of the program counter and the processor status
register are automatically pushed onto the stack.
2. The interrupt disable flag is set and the corresponding interrupt
request bit is cleared.
3. The interrupt jump destination address is read from the vector
table into the program counter.
12
1. Disable the interrupt
2. Change the interrupt edge selection register
(the timer XY mode register for CNTR0 and CNTR1)
3. Clear the interrupt request bit to “0”
4. Accept the interrupt.
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 4 Interrupt vector addresses and priority
Interrupt Source
Reset (Note 2)
Priority
1
Vector Addresses (Note 1)
High
Low
FFFD 16
FFFC 16
Interrupt Request
Generating Conditions
Remarks
At reset
Non-maskable
External interrupt
(active edge selectable)
INT0
2
FFFB16
FFFA16
At detection of either rising or
falling edge of INT0 input
Reserved
3
FFF916
FFF816
Reserved
INT1
4
FFF716
FFF616
At detection of either rising or
falling edge of INT1 input
External interrupt
(active edge selectable)
INT2
5
FFF516
FFF416
At detection of either rising or
falling edge of INT2 input
External interrupt
(active edge selectable)
INT3
6
FFF316
FFF216
At detection of either rising or
falling edge of INT3 input
External interrupt
(active edge selectable)
Reserved
Timer X
Timer Y
Timer 1
Timer 2
7
8
9
FFF116
FFEF16
FFF016
Reserved
10
11
FFED16
FFEB16
FFE916
FFEE 16
FFEC 16
FFEA 16
FFE816
At timer X underflow
At timer Y underflow
At timer 1 underflow
Serial I/O
reception
12
FFE716
FFE616
At completion of serial I/O data
reception
Valid when serial I/O is selected
Serial I/O
Transmission
13
FFE516
FFE416
At completion of serial I/O transfer shift or when transmission
buffer is empty
Valid when serial I/O is selected
CNTR 0
14
FFE316
FFE216
At detection of either rising or
falling edge of CNTR0 input
External interrupt
(active edge selectable)
CNTR 1
15
FFE116
FFE016
At detection of either rising or
falling edge of CNTR1 input
External interrupt
(active edge selectable)
A-D converter
BRK instruction
16
FFDF 16
FFDE 16
At completion of A-D conversion
17
FFDD16
FFDC16
At BRK instruction execution
STP release timer underflow
At timer 2 underflow
Non-maskable software interrupt
Notes 1: Vector addresses contain interrupt jump destination addresses.
2: Reset function in the same way as an interrupt with the highest priority.
13
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Interrupt request bit
Interrupt enable bit
Interrupt disable flag (I)
BRK instruction
Reset
Interrupt request
Fig. 10 Interrupt control
b7
b0 Interrupt edge selection register
(INTEDGE : address 003A16)
INT0 active edge selection bit
INT1 active edge selection bit
INT2 active edge selection bit
INT3 active edge selection bit
Reserved(Do not write “1” to this bit)
Not used (returns “0” when read)
b7
b0 Interrupt request register 1
(IREQ1 : address 003C16)
0 : Falling edge active
1 : Rising edge active
b7
b0 Interrupt request register 2
(IREQ2 : address 003D16)
INT0 interrupt request bit
Reserved
INT1 interrupt request bit
INT2 interrupt request bit
INT3 interrupt request bit
Reserved
Timer X interrupt request bit
Timer Y interrupt request bit
Timer 1 interrupt request bit
Timer 2 interrupt request bit
Serial I/O reception interrupt request bit
Serial I/O transmit interrupt request bit
CNTR0 interrupt request bit
CNTR1 interrupt request bit
AD converter interrupt request bit
Not used (returns “0” when read)
0 : No interrupt request issued
1 : Interrupt request issued
0 : No interrupt request issued
1 : Interrupt request issued
b7
b0
Interrupt control register 1
(ICON1 : address 003E16)
INT0 interrupt enable bit
Reserved(Do not write "1" to this bit)
INT1 interrupt enable bit
INT2 interrupt enable bit
INT3 interrupt enable bit
Reserved(Do not write "1" to this bit)
Timer X interrupt enable bit
Timer Y interrupt enable bit
0 : Interrupts disabled
1 : Interrupts enabled
Fig. 11 Structure of interrupt-related registers (1)
14
b7
b0
Interrupt control register 2
(ICON2 : address 003F16)
Timer 1 interrupt enable bit
Timer 2 interrupt enable bit
Serial I/O reception interrupt enable bit
Serial I/O transmit interrupt enable bit
CNTR0 interrupt enable bit
CNTR1 interrupt enable bit
AD converter interrupt enable bit
Not used (returns “0” when read)
(Do not write “1” to this bit)
0 : Interrupts disabled
1 : Interrupts enabled
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
TIMERS
Timer 1 and Timer 2
The 3850 group has four timers: timer X, timer Y, timer 1, and
timer 2.
The division ratio of each timer or prescaler is given by 1/(n + 1),
where n is the value in the corresponding timer or prescaler latch.
All timers are count down. When the timer reaches “0016 ”, an underflow occurs at the next count pulse and the corresponding
timer latch is reloaded into the timer and the count is continued.
When a timer underflows, the interrupt request bit corresponding
to that timer is set to “1”.
The count source of prescaler 12 is the oscillation frequency
which is selected by timer 12 count source selection bit. The output of prescaler 12 is counted by timer 1 and timer 2, and a timer
underflow sets the interrupt request bit.
Timer X and Timer Y
Timer X and Timer Y can each select in one of four operating
modes by setting the timer XY mode register.
(1) Timer Mode
The timer counts the count source selected by Timer count source
selection bit.
b7
b0
Timer XY mode register
(TM : address 002316)
Timer X operating mode bit
b1b0
0 0: Timer mode
0 1: Pulse output mode
1 0: Event counter mode
1 1: Pulse width measurement mode
CNTR0 active edge selection bit
0: Interrupt at falling edge
Count at rising edge in event
counter mode
1: Interrupt at rising edge
Count at falling edge in event
counter mode
Timer X count stop bit
0: Count start
1: Count stop
Timer Y operating mode bit
b5b4
0 0: Timer mode
0 1: Pulse output mode
1 0: Event counter mode
1 1: Pulse width measurement mode
CNTR1 active edge selection bit
0: Interrupt at falling edge
Count at rising edge in event
counter mode
1: Interrupt at rising edge
Count at falling edge in event
counter mode
Timer Y count stop bit
0: Count start
1: Count stop
Fig. 12 Structure of timer XY mode register
b7
b0
Timer count source selection register
(TCSS : address 002816)
Timer X count source selection bit
0 : f(XIN)/16 (f(XCIN)/16 at low-speed mode)
1 : f(XIN)/2 (f(XCIN)/2 at low-speed mode)
Timer Y count source selection bit
0 : f(XIN)/16 (f(XCIN)/16 at low-speed mode)
1 : f(XIN)/2 (f(XCIN)/2 at low-speed mode)
Timer 12 count source selection bit
0 : f(XIN)/16 (f(XCIN)/16 at low-speed mode)
1 : f(XCIN)
Not used (returns “0” when read)
Fig. 13 Structure of timer count source selection register
(2) Pulse Output Mode
The timer counts the count source selected by Timer count source
selection bit. Whenever the contents of the timer reach “0016 ”, the
signal output from the CNTR0 (or CNTR1) pin is inverted. If the
CNTR0 (or CNTR 1 ) active edge selection bit is “0”, output begins
at “ H”.
If it is “1”, output starts at “L”. When using a timer in this mode, set
the corresponding port P27 ( or port P40 ) direction register to output mode.
(3) Event Counter Mode
Operation in event counter mode is the same as in timer mode, except that the timer counts signals input through the CNTR0 or
CNTR1 pin.
When the CNTR0 (or CNTR1) active edge selection bit is “0”, the
rising edge of the CNTR0 (or CNTR 1) pin is counted.
When the CNTR0 (or CNTR1) active edge selection bit is “1”, the
falling edge of the CNTR0 (or CNTR1) pin is counted.
(4) Pulse Width Measurement Mode
If the CNTR0 (or CNTR1) active edge selection bit is “0”, the timer
counts the selected signals by the count source selection bit while
the CNTR0 (or CNTR1) pin is at “H”. If the CNTR0 (or CNTR 1) active edge selection bit is “1”, the timer counts it while the CNTR 0
(or CNTR1 ) pin is at “L”.
The count can be stopped by setting “1” to the timer X (or timer Y)
count stop bit in any mode. The corresponding interrupt request
bit is set each time a timer underflows.
■Note
When switching the count source by the timer 12, X and Y count
source bit, the value of timer count is altered in unconsiderable
amount owing to generating of a thin pulses in the count input
signals.
Therefore, select the timer count source before set the value to
the prescaler and the timer.
15
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Data bus
f(XIN)/16
f(XIN)/2
Prescaler X latch (8)
Timer X latch (8)
Pulse width
Timer X count source selection bit measurement Timer mode
Pulse output mode
mode
Prescaler X (8)
CNTR0 active
edge selection
bit
“0”
P27/CNTR0
Event
counter
mode
“1”
Timer X (8)
Timer X count stop bit
To CNTR0 interrupt
request bit
CNTR0 active
edge selection “1”
bit
“0”
Q
Toggle flip-flop T
Q
R
Timer X latch write pulse
Pulse output mode
Port P27
latch
Port P27
direction register
To timer X interrupt
request bit
Pulse output mode
Data bus
Prescaler Y latch (8)
f(XIN)/16
f(XIN)/2
Timer Y count source selection bit
Pulse width
measurement mode
Timer mode
Pulse output mode
Prescaler Y (8)
CNTR1 active
edge selection
bit
“0”
P40/CNTR1
Event
counter
mode
“1”
Port P40
direction register
Timer Y (8)
To timer Y interrupt
request bit
Timer Y count stop bit
To CNTR1 interrupt
request bit
CNTR1 active
edge selection “1”
bit
Q
Toggle flip-flop T
Q
Port P40
latch
Timer Y latch (8)
“0”
R
Timer Y latch write pulse
Pulse output mode
Pulse output mode
Data bus
Prescaler 12 latch (8)
f(XIN)/16
f(XCIN)
Prescaler 12 (8)
Timer 1 latch (8)
Timer 2 latch (8)
Timer 1 (8)
Timer 2 (8)
To timer 2 interrupt
request bit
Timer 12 count source selection bit
To timer 1 interrupt
request bit
Fig. 14 Block diagram of timer X, timer Y, timer 1, and timer 2
16
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
SERIAL I/O
(1) Clock Synchronous Serial I/O Mode
Serial I/O can be used as either clock synchronous or asynchronous (UART) serial I/O. A dedicated timer is also provided for baud
rate generation.
Clock synchronous serial I/O mode can be selected by setting the
serial I/O mode selection bit of the serial I/O control register (bit 6
of address 001A16) to “1”.
For clock synchronous serial I/O, the transmitter and the receiver
must use the same clock. If an internal clock is used, transfer is
started by a write signal to the TB/RB.
Data bus
Serial I/O control register
Address 001816
Receive buffer register
Receive interrupt request (RI)
Receive shift register
P24/RXD
Address 001A16
Receive buffer full flag (RBF)
Shift clock
Clock control circuit
P26/SCLK
XIN
Serial I/O synchronous
clock selection bit
Frequency division ratio 1/(n+1)
BRG count source selection bit
Baud rate generator
Address 001C16
1/4
P27/SRDY
F/F
1/4
Clock control circuit
Falling-edge detector
Shift clock
P25/TXD
Transmit shift register
Transmit shift completion flag (TSC)
Transmit interrupt source selection bit
Transmit interrupt request (TI)
Transmit buffer register
Transmit buffer empty flag (TBE)
Serial I/O status register
Address 001916
Address 001816
Data bus
Fig. 15 Block diagram of clock synchronous serial I/O
Transfer shift clock
(1/2 to 1/2048 of the internal
clock, or an external clock)
Serial output TxD
D0
D1
D2
D3
D4
D5
D6
D7
Serial input RxD
D0
D1
D2
D3
D4
D5
D6
D7
Receive enable signal SRDY
Write pulse to receive/transmit
buffer register (address 001816)
TBE = 0
TBE = 1
TSC = 0
RBF = 1
TSC = 1
Overrun error (OE)
detection
Notes 1: As the transmit interrupt (TI), either when the transmit buffer has emptied (TBE=1) or after the transmit shift operation has
ended (TSC=1), by setting the transmit interrupt source selection bit (TIC) of the serial I/O control register.
2: If data is written to the transmit buffer register when TSC=0, the transmit clock is generated continuously and serial data
is output continuously from the TxD pin.
3: The receive interrupt (RI) is set when the receive buffer full flag (RBF) becomes “1” .
Fig. 16 Operation of clock synchronous serial I/O function
17
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
(2) Asynchronous Serial I/O (UART) Mode
two buffers have the same address in memory. Since the shift register cannot be written to or read from directly, transmit data is
written to the transmit buffer register, and receive data is read from
the receive buffer register.
The transmit buffer register can also hold the next data to be
transmitted, and the receive buffer register can hold a character
while the next character is being received.
Clock asynchronous serial I/O mode (UART) can be selected by
clearing the serial I/O mode selection bit (b6) of the serial I/O control register to “0”.
Eight serial data transfer formats can be selected, and the transfer
formats used by a transmitter and receiver must be identical.
The transmit and receive shift registers each have a buffer, but the
Data bus
Address 0018 16
Serial I/O control register
P24/RXD
Address 001A16
Receive buffer full flag (RBF)
Receive interrupt request (RI)
Receive buffer register
OE
Character length selection bit
ST detector
7 bits
Receive shift register
1/16
8 bits
PE FE
SP detector
Clock control circuit
UART control register
Address 001B16
Serial I/O synchronous clock selection bit
P26/SCLK1
XIN
BRG count source selection bit Frequency division ratio 1/(n+1)
Baud rate generator
Address 001C 16
1/4
ST/SP/PA generator
1/16
P25/TXD
Transmit shift register
Transmit shift completion flag (TSC)
Transmit interrupt source selection bit
Transmit interrupt request (TI)
Character length selection bit
Transmit buffer register
Address 001816
Data bus
Fig.17 Block diagram of UART serial I/O
18
Transmit buffer empty flag (TBE)
Serial I/O status register Address 001916
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Transmit or receive clock
Transmit buffer write
signal
TBE=0
TSC=0
TBE=1
Serial output TXD
TBE=0
TBE=1
ST
D0
D1
SP
TSC=1
ST
D0
D1
1 start bit
7 or 8 data bit
1 or 0 parity bit
1 or 2 stop bit (s)
Receive buffer read
signal
SP
Generated at 2nd bit in 2-stop-bit mode
RBF=0
RBF=1
Serial input RXD
ST
D0
D1
SP
RBF=1
ST
D0
D1
SP
Notes 1: Error flag detection occurs at the same time that the RBF flag becomes “1” (at 1st stop bit, during reception).
2: As the transmit interrupt (TI), when either the TBE or TSC flag becomes “1,” can be selected to occur depending on the setting of the transmit
interrupt source selection bit (TIC) of the serial I/O control register.
3: The receive interrupt (RI) is set when the RBF flag becomes “1.”
4: After data is written to the transmit buffer when TSC=1, 0.5 to 1.5 cycles of the data shift cycle is necessary until changing to TSC=0.
Fig. 18 Operation of UART serial I/O function
[Transmit Buffer Register/Receive Buffer
Register (TB/RB)] 001816
The transmit buffer register and the receive buffer register are located at the same address. The transmit buffer is write-only and
the receive buffer is read-only. If a character bit length is 7 bits, the
MSB of data stored in the receive buffer is “0”.
[Serial I/O Status Register (SIOSTS)] 001916
The read-only serial I/O status register consists of seven flags
(bits 0 to 6) which indicate the operating status of the serial I/O
function and various errors.
Three of the flags (bits 4 to 6) are valid only in UART mode.
The receive buffer full flag (bit 1) is cleared to “0” when the receive
buffer register is read.
If there is an error, it is detected at the same time that data is
transferred from the receive shift register to the receive buffer register, and the receive buffer full flag is set. A write to the serial I/O
status register clears all the error flags OE, PE, FE, and SE (bit 3
to bit 6, respectively). Writing “0” to the serial I/O enable bit SIOE
(bit 7 of the serial I/O control register) also clears all the status
flags, including the error flags.
Bits 0 to 6 of the serial I/O status register are initialized to “0” at reset, but if the transmit enable bit (bit 4) of the serial I/O control
register has been set to “1”, the transmit shift completion flag (bit
2) and the transmit buffer empty flag (bit 0) become “1”.
Serial I/O Control Register (SIOCON)] 001A16
The serial I/O control register consists of eight control bits for the
serial I/O function.
[UART Control Register (UARTCON)] 001B16
The UART control register consists of four control bits (bits 0 to 3)
which are valid when asynchronous serial I/O is selected and set
the data format of an data transfer and one bit (bit 4) which is always valid and sets the output structure of the P2 5/T XD pin.
[Baud Rate Generator (BRG)] 001C16
The baud rate generator determines the baud rate for serial transfer.
The baud rate generator divides the frequency of the count source
by 1/(n + 1), where n is the value written to the baud rate generator.
19
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
b7
b0
Serial I/O status register
(SIOSTS : address 0019 16)
Transmit buffer empty flag (TBE)
0: Buffer full
1: Buffer empty
Receive buffer full flag (RBF)
0: Buffer empty
1: Buffer full
Transmit shift completion flag (TSC)
0: Transmit shift in progress
1: Transmit shift completed
Overrun error flag (OE)
0: No error
1: Overrun error
Parity error flag (PE)
0: No error
1: Parity error
Framing error flag (FE)
0: No error
1: Framing error
Summing error flag (SE)
0: (OE) U (PE) U (FE)=0
1: (OE) U (PE) U (FE)=1
Not used (returns “1” when read)
b7
b0
UART control register
(UARTCON : address 001B 16)
Character length selection bit (CHAS)
0: 8 bits
1: 7 bits
Parity enable bit (PARE)
0: Parity checking disabled
1: Parity checking enabled
Parity selection bit (PARS)
0: Even parity
1: Odd parity
Stop bit length selection bit (STPS)
0: 1 stop bit
1: 2 stop bits
P25/TXD P-channel output disable bit (POFF)
0: CMOS output (in output mode)
1: N-channel open drain output (in output mode)
Not used (return “1” when read)
Fig. 19 Structure of serial I/O control registers
20
b7
b0
Serial I/O control register
(SIOCON : address 001A 16)
BRG count source selection bit (CSS)
0: f(X IN)
1: f(X IN)/4
Serial I/O synchronous clock selection bit (SCS)
0: BRG output divided by 4 when clock synchronous
serial I/O is selected, BRG output divided by 16
when UART is selected.
1: External clock input when clock synchronous serial
I/O is selected, external clock input divided by 16
when UART is selected.
SRDY output enable bit (SRDY)
0: P2 7 pin operates as ordinary I/O pin
1: P2 7 pin operates as S RDY output pin
Transmit interrupt source selection bit (TIC)
0: Interrupt when transmit buffer has emptied
1: Interrupt when transmit shift operation is completed
Transmit enable bit (TE)
0: Transmit disabled
1: Transmit enabled
Receive enable bit (RE)
0: Receive disabled
1: Receive enabled
Serial I/O mode selection bit (SIOM)
0: Clock asynchronous (UART) serial I/O
1: Clock synchronous serial I/O
Serial I/O enable bit (SIOE)
0: Serial I/O disabled
(pins P2 4 to P2 7 operate as ordinary I/O pins)
1: Serial I/O enabled
(pins P2 4 to P2 7 operate as serial I/O pins)
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PULSE WIDTH MODULATION (PWM)
PWM Operation
The 3850 group has a PWM function with an 8-bit resolution,
based on a signal that is the clock input XIN or that clock input divided by 2.
When bit 0 (PWM enable bit) of the PWM control register is set to
“1”, operation starts by initializing the PWM output circuit, and
pulses are output starting at an “H”.
If the PWM register or PWM prescaler is updated during PWM
output, the pulses will change in the cycle after the one in which
the change was made.
Data Setting
The PWM output pin also functions as port P4 4. Set the PWM period by the PWM prescaler, and set the “H” term of output pulse by
the PWM register.
If the value in the PWM prescaler is n and the value in the PWM
register is m (where n = 0 to 255 and m = 0 to 255) :
PWM period = 255 ✕ (n+1) / f(XIN)
= 31.875 ✕ (n+1) µs (when f(X IN) = 8 MHz)
Output pulse “H” term = PWM period ✕ m / 255
= 0.125 ✕ (n+1) ✕ m µs
(when f(XIN) = 8 MHz)
31.875 ✕ m ✕ (n+1)
µs
255
PWM output
T = [31.875 ✕ (n+1)] µs
m: Contents of PWM register
n : Contents of PWM prescaler
T : PWM period (when f(X IN) = 8 MHz)
Fig. 20 Timing of PWM period
Data bus
PWM
prescaler pre-latch
PWM
register pre-latch
Transfer control circuit
PWM
prescaler latch
PWM
register latch
PWM prescaler
PWM register
Count source
selection bit
“0”
XIN
1/2
Port P44
“1”
Port P44 latch
PWM enable bit
Fig. 21 Block diagram of PWM function
21
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
b7
b0
PWM control register
(PWMCON : address 001D 16)
PWM function enable bit
0: PWM disabled
1: PWM enabled
Count source selection bit
0: f(XIN)
1: f(XIN)/2
Not used (return “0” when read)
Fig. 22 Structure of PWM control register
A
B
B = C
T2
T
C
PWM output
T
PWM register
write signal
PWM prescaler
write signal
T
T2
(Changes “H” term from “A” to “B”.)
(Changes PWM period from “T” to “T2”.)
When the contents of the PWM register or PWM prescaler have changed, the PWM
output will change from the next period after the change.
Fig. 23 PWM output timing when PWM register or PWM prescaler is changed
■Note
The PWM starts after the PWM enable bit is set to enable and "L" level is output from the PWM pin.
The length of this "L" level output is as follows:
22
n+1
2 • f(XIN )
sec
(Count source selection bit = 0, where n is the value set in the prescaler)
n+1
f(XIN)
sec
(Count source selection bit = 1, where n is the value set in the prescaler)
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
A-D CONVERTER
[A-D Conversion Registers (ADL, ADH)]
003516, 003616
b7
b0
AD control register
(ADCON : address 0034 16)
The A-D conversion registers are read-only registers that store the
result of an A-D conversion. Do not read these registers during an
A-D conversion
Analog input pin selection bits
b2 b1 b0
0
0
0
0
1
[AD Control Register (ADCON)] 003416
The AD control register controls the A-D conversion process. Bits
0 to 2 select a specific analog input pin. Bit 4 indicates the
completion of an A-D conversion. The value of this bit remains at
“0” during an A-D conversion and changes to “1” when an A-D
conversion ends. Writing “0” to this bit starts the A-D conversion.
0
0
1
1
0
0: P30/AN0
1: P31/AN1
0: P32/AN2
1: P33/AN3
0: P34/AN4
Not used (returns “0” when read)
A-D conversion completion bit
0: Conversion in progress
1: Conversion completed
Not used (returns “0” when read)
Comparison Voltage Generator
Fig. 24 Structure of AD control register
The comparison voltage generator divides the voltage between
AVSS and VREF into 1024 and outputs the divided voltages.
Channel Selector
10-bit reading
(Read address 003616 before 003516)
The channel selector selects one of ports P30/AN0 to P34 /AN4 and
inputs the voltage to the comparator.
b7
b0
b9 b8
b7
b0
(Address 003616)
Comparator and Control Circuit
The comparator and control circuit compare an analog input voltage with the comparison voltage, and the result is stored in the
A-D conversion registers. When an A-D conversion is completed,
the control circuit sets the A-D conversion completion bit and the
A-D interrupt request bit to “1”.
Note that because the comparator consists of a capacitor coupling, set f(XIN) to 500 kHz or more during an A-D conversion.
(Address 003516) b7 b6 b5 b4 b3 b2 b1 b0
Note : The high-order 6 bits of address 0036 16 become “0”
at reading.
8-bit reading (Read only address 003516)
b7
b0
(Address 003516) b9 b8 b7 b6 b5 b4 b3 b2
Fig. 25 Structure of A-D conversion registers
Data bus
AD control register
(Address 0034 16)
b7
b0
3
A-D interrupt request
A-D control circuit
Channel selector
P30/AN0
P31/AN 1
P32/AN 2
P33/AN 3
P34/AN 4
Comparator
A-D conversion high-order register (Address 0036 16)
A-D conversion low-order register (Address 0035 16)
10
Resistor ladder
VREF AV SS
Fig. 26 Block diagram of A-D converter
23
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
WATCHDOG TIMER
●Watchdog timer H count source selection bit operation
Bit 7 of the watchdog timer control register (address 003916) permits selecting a watchdog timer H count source. When this bit is
set to “0”, the count source becomes the underflow signal of
watchdog timer L. The detection time is set to 131.072 ms at f(XIN)
= 8 MHz frequency and 32.768 s at f(XCIN ) = 32 kHz frequency.
When this bit is set to “1”, the count source becomes the signal
divided by 16 for f(XIN) (or f(XCIN)). The detection time in this case
is set to 512 µs at f(XIN) = 8 MHz frequency and 128 ms at f(XCIN )
= 32 kHz frequency. This bit is cleared to “0” after resetting.
The watchdog timer gives a mean of returning to the reset status
when a program cannot run on a normal loop (for example, because of a software run-away). The watchdog timer consists of an
8-bit watchdog timer L and an 8-bit watchdog timer H.
Standard Operation of Watchdog Timer
When any data is not written into the watchdog timer control register (address 003916) after resetting, the watchdog timer is in the
stop state. The watchdog timer starts to count down by writing an
optional value into the watchdog timer control register (address
003916 ) and an internal reset occurs at an underflow of the watchdog timer H.
Accordingly, programming is usually performed so that writing to
the watchdog timer control register (address 0039 16) may be
started before an underflow. When the watchdog timer control register (address 003916) is read, the values of the high-order 6 bits
of the watchdog timer H, STP instruction disable bit, and watchdog timer H count source selection bit are read.
●Operation of STP instruction disable bit
Bit 6 of the watchdog timer control register (address 003916) permits disabling the STP instruction when the watchdog timer is in
operation.
When this bit is “0”, the STP instruction is enabled.
When this bit is “1”, the STP instruction is disabled, once the STP
instruction is executed, an internal reset occurs. When this bit is
set to “1”, it cannot be rewritten to “0” by program. This bit is
cleared to “0” after resetting.
●Initial value of watchdog timer
At reset or writing to the watchdog timer control register (address
003916 ), each watchdog timer H and L is set to “FF16.”
“FF16” is set when
watchdog timer
control register is
written to.
XCIN
XIN
“FF16” is set when
watchdog timer
control register is
written to.
“0”
“10”
Main clock division
ratio selection bits
(Note)
Data bus
Watchdog timer L (8)
1/16
“1”
“00”
“01”
Watchdog timer H (8)
Watchdog timer H count
source selection bit
STP instruction disable bit
STP instruction
Reset
circuit
RESET
Internal reset
Note: Any one of high-speed, middle-speed or low-speed mode is selected by bits 7 and 6 of the CPU mode register.
Fig. 27 Block diagram of Watchdog timer
b7
b0
Watchdog timer control register
(WDTCON : address 0039 16)
Watchdog timer H (for read-out of high-order 6 bit)
STP instruction disable bit
0: STP instruction enabled
1: STP instruction disabled
Watchdog timer H count source selection bit
0: Watchdog timer L underflow
1: f(XIN)/16 or f(XCIN)/16
Fig. 28 Structure of Watchdog timer control register
24
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
RESET CIRCUIT
To reset the microcomputer, RESET pin must be held at an "L"
level for 2 µs or more. Then the RESET pin is returned to an "H"
level (the power source voltage must be between 2.7 V and 5.5 V,
and the oscillation must be stable), reset is released. After the reset is completed, the program starts from the address contained in
address FFFD16 (high-order byte) and address FFFC 16 (low-order
byte). Make sure that the reset input voltage is less than 0.54 V for
VCC of 2.7 V.
Poweron
RESET
Power source
voltage
0V
VCC
Reset input
voltage
0V
(Note)
0.2VCC
Note : Reset release voltage ; Vcc=2.7 V
RESET
VCC
Power source
voltage detection
circuit
Fig. 29 Reset circuit example
XIN
φ
RESET
RESETOUT
?
?
Address
?
?
FFFC
FFFD
ADH,L
Reset address from the vector table.
?
Data
?
?
?
ADL
ADH
SYNC
XIN: 8 to 13 clock cycles
Notes 1: The frequency relation of f(X IN) and f(φ) is f(XIN) = 2 • f(φ).
2: The question marks (?) indicate an undefined state that depends on the previous state.
3: All signals except X IN and RESET are internals.
Fig. 30 Reset sequence
25
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Address Register contents
(1)
Port P0 direction register (P0D)
000116
0016
(2)
Port P1 direction register (P1D)
000316
0016
(3)
Port P2 direction register (P2D)
000516
0016
(4)
Port P3 direction register (P3D)
000716
0016
(5)
Port P4 direction register (P4D)
000916
0016
(6)
Serial I/O status register (SIOSTS)
001916 1 0 0 0 0 0 0 0
(7)
Serial I/O control register (SIOCON)
001A16
(8)
UART control register (UARTCON)
001B16 1 1 1 0 0 0 0 0
(9)
PWM control register (PWMCON)
001D16
0016
(10) Prescaler 12 (PRE12)
002016
FF16
(11) Timer 1 (T1)
002116
0116
(12) Timer 2 (T2)
002216
0016
(13) Timer XY mode register (TM)
002316
0016
(14) Prescaler X (PREX)
002416
FF16
(15) Timer X (TX)
002516
FF16
(16) Prescaler Y (PREY)
002616
FF16
(17) Timer Y (TY)
002716
FF16
(18) Timer count source select register
002816
0016
(19) Reserved
002C16
Not fixed
(20) Reserved
002D16
Not fixed
(21) Reserved
002E16
Not fixed
(22) Reserved
002F16
Not fixed
(23) Reserved
003016
Not fixed
(24) AD control register (ADCON)
003416 0 0 0 1 0 0 0 0
(25) MISRG
003816
(26) Watchdog timer control register (WDTCON)
003916 0 0 1 1 1 1 1 1
(27) Interrupt edge selection register (INTEDGE)
003A16
(28) CPU mode register (CPUM)
003B16 0 1 0 0 1 0 0 0
(29) Interrupt request register 1 (IREQ1)
003C16
0016
(30) Interrupt request register 2 (IREQ2)
003D16
0016
(31) Interrupt control register 1 (ICON1)
003E16
0016
(32) Interrupt control register 2 (ICON2)
003F16
0016
(33) Processor status register
(34) Program counter
Note : X indicates Not fixed .
Fig. 31 Internal status at reset
26
0016
0016
0016
(PS) X X X X X 1 X X
(PCH)
FFFD16 contents
(PCL)
FFFC16 contents
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
CLOCK GENERATING CIRCUIT
The 3850 group has two built-in oscillation circuits. An oscillation
circuit can be formed by connecting a resonator between XIN and
XOUT (XCIN and X COUT). Use the circuit constants in accordance
with the resonator manufacturer’s recommended values. No external resistor is needed between XIN and XOUT since a feed-back
resistor exists on-chip. However, an external feed-back resistor is
needed between XCIN and XCOUT.
Immediately after power on, only the XIN oscillation circuit starts
oscillating, and XCIN and X COUT pins function as I/O ports.
Frequency Control
(1) Middle-speed mode
The internal clock φ is the frequency of XIN divided by 8. After reset, this mode is selected.
(2) High-speed mode
be generated.
(2) Wait mode
If the WIT instruction is executed, the internal clock φ stops at an
“H” level, but the oscillator does not stop. The internal clock φ restarts at reset or when an interrupt is received. Since the oscillator
does not stop, normal operation can be started immediately after
the clock is restarted.
To ensure that the interrupts will be received to release the STP or
WIT state, their interrupt enable bits must be set to “1” before executing of the STP or WIT instruction.
When releasing the STP state, the prescaler 12 and timer 1 will
start counting the clock XIN divided by 16. Accordingly, set the
timer 1 interrupt enable bit to “0” before executing the STP instruction.
The internal clock φ is half the frequency of XIN .
■Note
(3) Low-speed mode
When using the oscillation stabilizing time set after STP instruction
released bit set to “1”, evaluate time to stabilize oscillation of the
used oscillator and set the value to the timer 1 and prescaler 12.
The internal clock φ is half the frequency of XCIN .
■Note
If you switch the mode between middle/high-speed and lowspeed, stabilize both X IN and XCIN oscillations. The sufficient time
is required for the sub-clock to stabilize, especially immediately after power on and at returning from the stop mode. When switching
the mode between middle/high-speed and low-speed, set the frequency on condition that f(XIN) > 3•f(XCIN).
XCIN
XCOUT
Rf
XIN
XOUT
Rd
(4) Low power dissipation mode
The low power consumption operation can be realized by stopping
the main clock XIN in low-speed mode. To stop the main clock, set
bit 5 of the CPU mode register to “1.” When the main clock XIN is
restarted (by setting the main clock stop bit to “0”), set sufficient
time for oscillation to stabilize.
The sub-clock XCIN -XCOUT oscillating circuit can not directly input
clocks that are generated externally. Accordingly, make sure to
cause an external resonator to oscillate.
Oscillation Control
(1) Stop mode
If the STP instruction is executed, the internal clock φ stops at an
“H” level, and XIN and XCIN oscillation stops. When the oscillation
stabilizing time set after STP instruction released bit is “0,” the
prescaler 12 is set to “FF 16” and timer 1 is set to “01 16.” When the
oscillation stabilizing time set after STP instruction released bit is
“1,” set the sufficient time for oscillation of used oscillator to stabilize since nothing is set to the prescaler 12 and timer 1.
Either XIN or X CIN divided by 16 is input to the prescaler 12 as
count source. Oscillator restarts when an external interrupt is received, but the internal clock φ is not supplied to the CPU (remains
at “H”) until timer 1 underflows. The internal clock φ is supplied for
the first time, when timer 1 underflows. This ensures time for the
clock oscillation using the ceramic resonators to be stabilized.
When the oscillator is restarted by reset, apply “L” level to the
RESET pin until the oscillation is stable since a wait time will not
CCIN
CCOUT
CIN
COUT
Fig. 32 Ceramic resonator circuit
XCIN
XCOUT
Rf
XIN
XOUT
Open
Rd
External oscillation
circuit
CCIN
CCOUT
Vcc
Vss
Fig. 33 External clock input circuit
27
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
b7
Middle-speed mode automatic switch set bit
b0
By setting the middle-speed mode automatic switch set bit to “1”
while operating in the low-speed mode, XIN oscillation automatically starts and the mode is automatically switched to the
middle-speed mode when defecting a rising/falling edge of the
SCL or SDA pin. The middle-speed automatic switch wait time set
bit can select the switch timing from the low-speed to the middlespeed mode; either 4.5 to 5.5 machine cycles or 6.5 to 7.5
machine cycles in the low-speed mode. Select it according to oscillation start characteristics of used X IN oscillator.
The middle-speed mode automatic switch start bit is used to automatically make to X IN oscillation start and switch to the
middle-speed mode by setting this bit to “1” while operating in the
low-speed mode.
MISRG
(MISRG : address 0038 16)
Oscillation stabilizing time set after STP instruction
released bit
0: Automatically set “01 16 ” to Timer 1,
“FF 16 ” to Prescaler 12
1: Automatically set nothing
Middle-speed mode automatic switch set bit
0: Not set automatically
1: Automatic switching enable
Middle-speed mode automatic switch wait time set bit
0: 4.5 to 5.5 machine cycles
1: 6.5 to 7.5 machine cycles
Middle-speed mode automatic switch start bit
(Depending on program)
0: Invalid
1: Automatic switch start
Not used (return “0” when read)
Fig. 34 Structure of MISRG
XCOUT
XCIN
“0”
“1”
Port XC
switch bit
XOUT
XIN
Main clock division ratio
selection bits (Note)
Low-speed mode
1/2
1/4
Prescaler 12
1/2
High-speed or
middle-speed
mode
FF16
Timer 1
0116
Reset or
STP instruction
Main clock division ratio
selection bits (Note)
Middle-speed mode
Timing φ (internal clock)
High-speed or
low-speed mode
Main clock stop bit
Q
S
R
S Q
STP instruction
WIT instruction
R
Q S
R
STP instruction
Reset
Interrupt disable flag l
Interrupt request
Note: Any one of high-speed, middle-speed or low-speed mode is selected by bits 7 and 6 of the CPU mode register.
When low-speed mode is selected, set port Xc switch bit (b1) to “1”.
Fig. 35 System clock generating circuit block diagram (Single-chip mode)
28
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Reset
4
CM7=0
CM6=0
CM5=0(8 MHz oscillating)
CM4=0(32 kHz stopped)
C
“0 M4
”
C ←
“1 M6 →“
1”
”←
→
“0
”
”
“0
→
CM ”←
0”
“1 M6 →“
C ”←
“1
High-speed mode
(f(φ)=4 MHz)
CM 6
“1”←→“0”
“1
C
“0 M7
CM ”←→
6
”←
→
CM 4
“1”←→“0”
CM 4
“1”←→“0”
CM 7=0
CM 6=1
CM 5=0(8 MHz oscillating)
CM 4=0(32 kHz stopped)
Middle-speed mode
(f(φ)=1 MHz)
CM 7=0
CM 6=1
CM 5=0(8 MHz oscillating)
CM 4=1(32 kHz oscillating)
High-speed mode
(f(φ)=4 MHz)
CM 6
“1”←→“0”
CM 7=0
CM 6=0
CM 5=0(8 MHz oscillating)
CM 4=1(32 kHz oscillating)
“1
”
“0
”
CM 7
“1”←→“0”
Middle-speed mode
(f(φ)=1 MHz)
Low-speed mode
(f(φ)=16 kHz)
CM 5
“1”←→“0”
CM7=1
CM6=0
CM5=0(8 MHz oscillating)
CM4=1(32 kHz oscillating)
Low-speed mode
(f(φ)=16 kHz)
CM7=1
CM6=0
CM5=1(8 MHz stopped)
CM4=1(32 kHz oscillating)
b7
b4
CPU mode register
(CPUM : address 003B 16)
CM4 : Port Xc switch bit
0 : I/O port function (stop oscillating)
1 : X CIN-XCOUT oscillating function
CM5 : Main clock (X IN- XOUT) stop bit
0 : Operating
1 : Stopped
CM7, CM6: Main clock division ratio selection bit
b7 b6
0 0 : φ = f(XIN)/2 ( High-speed mode)
0 1 : φ = f(XIN)/8 (Middle-speed mode)
1 0 : φ = f(XCIN)/2 (Low-speed mode)
1 1 : Not available
Notes 1 : Switch the mode by the allows shown between the mode blocks. (Do not switch between the modes directly without an allow.)
2 : The all modes can be switched to the stop mode or the wait mode and return to the source mode when the stop mode or the wait mode is
ended.
3 : Timer operates in the wait mode.
4 : When the stop mode is ended, a delay of approximately 1 ms occurs by connecting prescaler 12 in middle/high-speed mode.
5 : When the stop mode is ended, a delay of approximately 16 ms occurs by Timer 1 and Timer 2 in low-speed mode.
6 : Wait until oscillation stabilizes after oscillating the main clock X IN before the switching from the low-speed mode to middle/high-speed
mode.
7 : The example assumes that 8 MHz is being applied to the X IN pin and 32 kHz to the X CIN pin. φ indicates the internal clock.
Fig. 36 State transitions of system clock
29
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
NOTES ON PROGRAMMING
Processor Status Register
A-D Converter
The contents of the processor status register (PS) after a reset are
undefined, except for the interrupt disable flag (I) which is “1.” After
a reset, initialize flags which affect program execution. In particular, it is essential to initialize the index X mode (T) and the decimal
mode (D) flags because of their effect on calculations.
The comparator uses capacitive coupling amplifier whose charge
will be lost if the clock frequency is too low.
Therefore, make sure that f(XIN) is at least on 500 kHz during an
A-D conversion.
Do not execute the STP or WIT instruction during an A-D conversion.
Interrupts
Instruction Execution Time
The contents of the interrupt request bits do not change immediately after they have been written. After writing to an interrupt
request register, execute at least one instruction before performing
a BBC or BBS instruction.
The instruction execution time is obtained by multiplying the frequency of the internal clock φ by the number of cycles needed to
execute an instruction.
The number of cycles required to execute an instruction is shown
in the list of machine instructions.
The frequency of the internal clock φ is half of the XIN frequency in
high-speed mode.
Decimal Calculations
• To calculate in decimal notation, set the decimal mode flag (D)
to “1”, then execute an ADC or SBC instruction. After executing
an ADC or SBC instruction, execute at least one instruction before executing a SEC, CLC, or CLD instruction.
• In decimal mode, the values of the negative (N), overflow (V),
and zero (Z) flags are invalid.
Timers
If a value n (between 0 and 255) is written to a timer latch, the frequency division ratio is 1/(n+1).
Multiplication and Division Instructions
• The index X mode (T) and the decimal mode (D) flags do not affect the MUL and DIV instruction.
• The execution of these instructions does not change the contents of the processor status register.
Ports
The contents of the port direction registers cannot be read. The
following cannot be used:
• The data transfer instruction (LDA, etc.)
• The operation instruction when the index X mode flag (T) is “1”
• The addressing mode which uses the value of a direction register as an index
• The bit-test instruction (BBC or BBS, etc.) to a direction register
• The read-modify-write instructions (ROR, CLB, or SEB, etc.) to a
direction register.
Use instructions such as LDM and STA, etc., to set the port direction registers.
Serial I/O
In clock synchronous serial I/O, if the receive side is using an external clock and it is to output the S RDY signal, set the transmit
enable bit, the receive enable bit, and the SRDY output enable bit
to “1.”
Serial I/O continues to output the final bit from the TXD pin after
transmission is completed.
When an external clock is used as synchronous clock in serial I/O,
write transmission data to the transmit buffer register while the
transfer clock is “H.”
30
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DATA REQUIRED FOR MASK ORDERS
ROM PROGRAMMING METHOD
The following are necessary when ordering a mask ROM production:
1.Mask ROM Order Confirmation Form
2.Mark Specification Form
3.Data to be written to ROM, in EPROM form (three identical copies)
The built-in PROM of the blank One Time PROM version and builtin EPROM version can be read or programmed with a
general-purpose PROM programmer using a special programming
adapter. Set the address of PROM programmer in the user ROM
area.
Table 5 Programming adapter
DATA R E QU I R E D F O R RO M W R I T I N G
ORDERS
The following are necessary when ordering a ROM writing:
1.ROM Writing Confirmation Form
2.Mark Specification Form
3.Data to be written to ROM, in EPROM form (three identical copies)
Package
Name of Programming Adapter
42P2R-A
PCA4738F-42A
42P4B
PCA4738S-42A
The PROM of the blank One Time PROM version is not tested or
screened in the assembly process and following processes. To ensure proper operation after programming, the procedure shown in
Figure 49 is recommended to verify programming.
Programming with PROM
programmer
Screening (Caution)
(150 °C for 40 hours)
Verification with
PROM programmer
Functional check in
target device
Caution : The screening temperature is far higher
than the storage temperature. Never
expose to 150 °C exceeding 100 hours.
Fig. 37 Programming and testing of One Time PROM version
31
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
ELECTRICAL CHARACTERISTICS
Table 6 Absolute maximum ratings
Symbol
VCC
VI
VI
VI
VI
VO
VO
Pd
Topr
Tstg
Parameter
Power source voltage
Input voltage P00–P07, P10 –P17, P20, P21,
P24–P27, P30 –P34, P40–P44 ,
VREF
Input voltage P22, P23
Input voltage RESET, XIN
Input voltage CNVSS
Output voltage P00–P07, P10 –P17, P20, P21,
P24–P27, P30 –P34, P40–P44 ,
XOUT
Output voltage P22, P23
Power dissipation
Operating temperature
Storage temperature
Conditions
All voltages are based on VSS.
Output transistors are cut off.
Ratings
–0.3 to 7.0
Unit
V
–0.3 to VCC +0.3
V
–0.3 to 5.8
–0.3 to VCC +0.3
–0.3 to 13
V
V
V
–0.3 to VCC +0.3
V
–0.3 to 5.8
300
–20 to 85
–40 to 125
V
mW
°C
°C
Ta = 25 °C
Table 7 Recommended operating conditions (1)
(VCC = 2.7 to 5.5 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
VCC
VSS
VREF
AVSS
VIA
VIH
VIH
VIL
VIL
VIL
ΣI OH(peak)
ΣI OH(peak)
ΣI OL(peak)
ΣI OL(peak)
ΣI OL(peak)
ΣI OH(avg)
ΣI OH(avg)
ΣI OL(avg)
ΣI OL(avg)
ΣI OL(avg)
Parameter
Power source voltage (At 8 MHz)
Power source voltage (At 4 MHz)
Power source voltage
A-D convert reference voltage
Analog power source voltage
Analog input voltage
AN 0–AN4
“H” input voltage
“H” input voltage
P00–P07, P10 –P17, P20–P27 , P30–P34, P40 –P44
RESET, XIN, CNV SS
“L” input voltage
“L” input voltage
P00–P07, P10 –P17, P20–P27 , P30–P34, P40 –P44
RESET, CNV SS
“L” input voltage
XIN
“H” total peak output current
“H” total peak output current
“L” total peak output current
“L” total peak output current
“L” total peak output current
“H” total average output current
“H” total average output current
“L” total average output current
“L” total average output current
“L” total average output current
P00–P07 , P10–P17, P3 0–P34 (Note)
P20, P2 1, P24–P27, P4 0–P44 (Note)
P00–P07 , P10–P12, P3 0–P34 (Note)
P13–P17 (Note)
P20 –P27 ,P40 –P44 (Note)
P00–P07 , P10–P17, P3 0–P34 (Note)
P20, P2 1, P24–P27, P4 0–P44 (Note)
P00–P07 , P10–P12, P3 0–P34 (Note)
P13–P17 (Note)
P20 –P27 ,P40 –P44 (Note)
Min.
4.0
2.7
Limits
Typ.
5.0
5.0
0
2.0
Max.
5.5
5.5
V
VCC
VCC
VCC
0.2V CC
0.2V CC
0.16VCC
V
V
V
V
V
V
V
V
V
–80
–80
80
80
80
–40
–40
40
40
40
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
VCC
0
AVSS
0.8VCC
0.8VCC
0
0
0
Unit
Note : The total output current is the sum of all the currents flowing through all the applicable ports. The total average current is an average value measured
over 100 ms. The total peak current is the peak value of all the currents.
32
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 8 Recommended operating conditions (2)
(VCC = 2.7 to 5.5 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
I OH(peak)
I OL(peak)
I OL(peak)
I OH(avg)
I OL(avg)
I OL(avg)
f(XIN )
f(XIN )
Parameter
“H” peak output current
P00 –P07, P10–P17 , P20, P21, P2 4–P27, P30–P34 ,
P40 –P44 (Note 1)
“L” peak output current
P00 –P07, P10–P12, P2 0–P27, P30 –P34, P40–P44
(Note 1)
“L” peak output current
P13 –P17 (Note 1)
“H” average output current
P00 –P07, P10–P17 , P20, P21, P2 4–P27, P30–P34 ,
P40 –P44 (Note 2)
“L” average output current
P00 –P07, P10–P12, P2 0–P27, P30 –P34, P40–P44
(Note 2)
“L” peak output current
P13 –P17 (Note 2)
Internal clock oscillation frequency (VCC = 4.0 to 5.5V) (Note 3)
Internal clock oscillation frequency (VCC = 2.7 to 5.5V) (Note 3)
Min.
Limits
Typ.
Max.
Unit
–10
mA
10
mA
20
mA
–5
mA
5
mA
15
8
4
mA
MHz
kHz
Notes 1: The peak output current is the peak current flowing in each port.
2: The average output current I OL(avg), IOH(avg) are average value measured over 100 ms.
3: When the oscillation frequency has a duty cycle of 50%.
33
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 9 Electrical characteristics
(VCC = 2.7 to 5.5 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Limits
Symbol
VOH
VOL
VOL
VT+–VT–
VT+–VT–
VT+–VT–
I IH
I IH
I IH
I IL
I IL
I IL
VRAM
Parameter
“H” output voltage
P00–P07 , P10–P17, P20 , P21,
P24–P27 , P30–P34, P40–P44
(Note)
“L” output voltage
P00–P07 , P10–P12, P20–P27
P30–P34, P4 0–P44
“L” output voltage
P13–P17
Test conditions
I OH = –10 mA
VCC = 4.0–5.5 V
I OH = –1.0 mA
VCC = 2.7–5.5 V
I OL = 10 mA
VCC = 4.0–5.5 V
I OL = 1.0 mA
VCC = 2.7–5.5 V
I OL = 20 mA
VCC = 4.0–5.5 V
I OL = 10 mA
VCC = 2.7–5.5 V
Min.
VCC–1.0
V
2.0
V
1.0
V
2.0
V
1.0
V
0.4
V
0.5
V
0.5
V
VI = VCC
5.0
µA
VI = VCC
5.0
µA
µA
4
VI = VCC
VI = VSS
–5.0
µA
VI = VSS
VI = VSS
When clock stopped
–5.0
µA
µA
V
–4
2.0
Note: P25 is measured when the P25/TX D P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”.
34
Unit
V
Hysteresis RxD, SCLK
Hysteresis RESET
“H” input current RESET, CNV SS
“H” input current XIN
“L” input current
P00–P07 , P10–P17, P20–P27
P30–P34, P4 0–P44
“L” input current RESET,CNVSS
“L” input current XIN
RAM hold voltage
Max.
VCC–2.0
Hysteresis
CNTR0, CNTR 1, INT 0–INT3
“H” input current
P00–P07 , P10–P17, P20 , P21,
P24–P27 , P30–P34, P40–P44
Typ.
5.5
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 10 Electrical characteristics
(VCC = 2.7 to 5.5 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
I CC
Limits
Parameter
Power source current
Test conditions
High-speed mode
f(XIN ) = 8 MHz
f(XCIN ) = 32.768 kHz
Output transistors “off”
High-speed mode
f(XIN ) = 8 MHz (in WIT state)
f(XCIN ) = 32.768 kHz
Output transistors “off”
Low-speed mode
f(XIN ) = stopped
f(XCIN ) = 32.768 kHz
Output transistors “off”
Low-speed mode
f(XIN) = stopped
f(XCIN ) = 32.768 kHz (in WIT state)
Output transistors “off”
Low-speed mode (VCC = 3 V)
f(XIN) = stopped
f(XCIN ) = 32.768 kHz
Output transistors “off”
Low-speed mode (VCC = 3 V)
f(XIN ) = stopped
f(XCIN ) = 32.768 kHz (in WIT state)
Output transistors “off”
Middle-speed mode
f(XIN ) = 8 MHz
f(XCIN ) = stopped
Output transistors “off”
Middle-speed mode
f(XIN ) = 8 MHz (in WIT state)
f(XCIN ) = stopped
Output transistors “off”
Increment when A-D conversion is
executed
f(XIN ) = 8 MHz
All oscillation stopped
(in STP state)
Output transistors “off”
Ta = 25 °C
Ta = 85 °C
Min.
Typ.
Max.
6.8
13
Unit
mA
mA
1.6
60
200
µA
20
40
µA
20
55
µA
5.0
10.0
µA
4.0
7.0
mA
1.5
mA
800
µA
0.1
1.0
µA
10
µA
35
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 11 A-D converter characteristics
(VCC = 2.7 to 5.5 V, VSS = AVSS = 0 V, Ta = –20 to 85 °C, f(X IN) = 8 MHz, unless otherwise noted)
Symbol
Parameter
–
–
Resolution
Absolute accuracy (excluding quantization error)
Conversion time
Ladder resistor
Reference power source input current
A-D port input current
t CONV
RLADDER
I VREF
I I(AD)
36
Test conditions
VREF = 5.0 V
Limits
Min.
50
Typ.
35
150
0.5
Max.
10
±4
61
200
5.0
Unit
bit
LSB
tc(φ)
kΩ
µA
µA
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
TIMING REQUIREMENTS
Table 12 Timing requirements (1)
(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
t W(RESET)
t C(X IN)
t WH (XIN)
t WL (XIN)
t C(CNTR)
t WH (CNTR)
t WL(CNTR)
t C(S CLK)
t WH (SCLK)
t WL (SCLK)
t su(Rx D-SCLK)
t h(S CLK-Rx D)
Parameter
Reset input “L” pulse width
External clock input cycle time
External clock input “H” pulse width
External clock input “L” pulse width
CNTR0, CNTR1 input cycle time
CNTR0, CNTR1 , INT0–INT 3 input “H” pulse width
CNTR0, CNTR1 , INT0–INT 3 input “L” pulse width
Serial I/O clock input cycle time (Note)
Serial I/O clock input “H” pulse width (Note)
Serial I/O clock input “L” pulse width (Note)
Serial I/O input setup time
Serial I/O input hold time
Min.
2
125
50
50
200
80
80
800
370
370
220
100
Limits
Typ.
Max.
Unit
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note : When f(XIN ) = 8 MHz and bit 6 of address 001A16 is “1” (clock synchronous).
Divide this value by four when f(XIN ) = 8 MHz and bit 6 of address 001A16 is “0” (UART).
Table 13 Timing requirements (2)
(VCC = 2.7 to 4.0 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
t W(RESET)
t C(X IN)
t WH (XIN)
t WL (XIN)
t C(CNTR)
t WH (CNTR)
t WL(CNTR)
t C(S CLK)
t WH (SCLK)
t WL (SCLK)
t su(Rx D-SCLK)
t h(S CLK-Rx D)
Parameter
Reset input “L” pulse width
External clock input cycle time
External clock input “H” pulse width
External clock input “L” pulse width
CNTR0, CNTR1 input cycle time
CNTR0, CNTR1 , INT0–INT 3 input “H” pulse width
CNTR0, CNTR1 , INT0–INT 3 input “L” pulse width
Serial I/O clock input cycle time (Note)
Serial I/O clock input “H” pulse width (Note)
Serial I/O clock input “L” pulse width (Note)
Serial I/O input setup time
Serial I/O input hold time
Limits
Min.
2
250
100
100
500
230
230
2000
950
950
400
200
Typ.
Max.
Unit
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note : When f(XIN ) = 8 MHz and bit 6 of address 001A16 is “1” (clock synchronous).
Divide this value by four when f(XIN ) = 8 MHz and bit 6 of address 001A16 is “0” (UART).
37
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 14 Switching characteristics 1
(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
t WH (S CLK)
t WL (SCLK)
t d (SCLK -TXD)
t v (S CLK-TXD)
t r (SCLK )
t f (S CLK)
t r (CMOS)
t f (CMOS)
Parameter
Serial I/O clock output “H” pulse width
Serial I/O clock output “L” pulse width
Serial I/O output delay time (Note 1)
Serial I/O output valid time (Note 1)
Serial I/O clock output rising time
Serial I/O clock output falling time
CMOS output rising time (Note 2)
CMOS output falling time (Note 2)
Limits
Min.
Typ.
Max.
t C(SCLK )/2–30
t C(SCLK )/2–30
140
–30
10
10
30
30
30
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Notes 1: For t WH(SCLK), tWL (SCLK), when the P51/TX D P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”.
2: The XOUT pin is excluded.
Table 15 Switching characteristics 2
(VCC = 2.7 to 4.0 V, VSS = 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Symbol
t WH (S CLK)
t WL (SCLK )
t d (SCLK -TXD)
t v (S CLK-TXD)
t r (SCLK )
t f (S CLK)
t r (CMOS)
t f (CMOS)
Parameter
Serial I/O clock output “H” pulse width
Serial I/O clock output “L” pulse width
Serial I/O output delay time (Note 1)
Serial I/O output valid time (Note 1)
Serial I/O clock output rising time
Serial I/O clock output falling time
CMOS output rising time (Note 2)
CMOS output falling time (Note 2)
Limits
Min.
Typ.
tC (SCLK)/2–50
tC (SCLK)/2–50
Max.
350
–30
20
20
50
50
50
50
Notes 1: For t WH(SCLK), tWL (SCLK), when the P51/TX D P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”.
2: The XOUT pin is excluded.
38
Unit
ns
ns
ns
ns
ns
ns
ns
ns
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
1kΩ
Measurement output pin
Measurement output pin
100pF
100pF
CMOS output
Fig. 38 Circuit for measuring output switching characteristics (1)
N-channel open-drain output
Fig. 39 Circuit for measuring output switching characteristics (2)
39
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
tC(CNTR)
tWL(CNTR)
tWH(CNTR)
0.8VCC
CNTR0, CNTR1
0.2VCC
tWL(INT)
tWH(INT)
0.8VCC
INT0 to INT3
0.2VCC
tW(RESET)
RESET
0.8VCC
0.2VCC
tC(XIN)
tWL(XIN)
tWH(XIN)
0.8VCC
XIN
0.2VCC
tC(SCLK)
tf
SCLK
tr
tWL(S CLK)
0.8VCC
0.2VCC
tsu(RxD-SCLK)
td(SCLK-TXD)
Fig. 40 Timing diagram
40
th(SCLK-RxD)
0.8VCC
0.2VCC
RXD
TX D
tWH(SCLK)
tv(SCLK-TXD)
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MASK ROM CONFIRMATION FORM
GZZ-SH53-11B<86A0>
Mask ROM number
740 FAMILY MASK ROM CONFIRMATION FORM
SINGLE-CHIP MICROCOMPUTER M38503M2-XXXSP/FP
MITSUBISHI ELECTRIC
Date:
Receipt
Section head Supervisor
signature
signature
Note : Please fill in all items marked ❈.
Date
issued
)
Date:
Submitted by
Issuance
signature
❈ Customer
TEL
(
Company
name
Supervisor
❈ 1. Confirmation
Specify the name of the product being ordered and the type of EPROMs submitted.
Three EPROMs are required for each pattern.
If at least two of the three sets of EPROMs submitted contain identical data, we will produce masks based on this data.
We shall assume the responsibility for errors only if the mask ROM data on the products we produce differs from this
data. Thus, extreme care must be taken to verify the data in the submitted EPROMs.
Microcomputer name:
M38503M2-XXXSP
M38503M2-XXXFP
Checksum code for entire EPROM
(hexadecimal notation)
EPROM type (indicate the type used)
27512
27256
EPROM address
000016
Product name
000F16
001016
607F16
608016
7FFD16
7FFE16
7FFF16
ASCII code :
‘M38503M2-’
data
ROM (8K-130) bytes
In the address space of the microcomputer, the internal
ROM area is from address 608016 to FFFD16 . The reset
vector is stored in addresses FFFC16 and FFFD16.
EPROM address
000016
Product name
000F16
001016
E07F16
E08016
FFFD16
FFFE16
FFFF16
ASCII code :
‘M38503M2-’
data
ROM (8K-130) bytes
Address
000016
000116
000216
000316
000416
000516
000616
000716
(1) Set the data in the unused area (the shaded area of
the diagram) to “FF16 ”.
(2) The ASCII codes of the product name “M38503M2–”
must be entered in addresses 0000 16 to 0008 16. And
set the data “FF 16” in addresses 0009 16 to 000F16.
The ASCII codes and addresses are listed to the right
in hexadecimal notation.
‘M’ = 4D16
‘3’ = 33 16
‘8’ = 38 16
‘5’ = 35 16
‘0’ = 30 16
‘3’ = 33 16
‘M’ = 4D16
‘2’ = 32 16
Address
000816
000916
000A16
000B16
000C 16
000D 16
000E16
000F 16
‘–’ = 2D16
FF 16
FF 16
FF 16
FF 16
FF 16
FF 16
FF 16
(1/2)
41
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
GZZ-SH53-11B<86A0>
Mask ROM number
740 FAMILY MASK ROM CONFIRMATION FORM
SINGLE-CHIP MICROCOMPUTER M38503M2-XXXSP/FP
MITSUBISHI ELECTRIC
We recommend the use of the following pseudo-command to set the start address of the assembler source program because ASCII codes of the product name are written to addresses 0000 16 to 000816 of EPROM.
EPROM type
27256
27512
The pseudo-command
*= $8000
.BYTE ‘M38503M2–’
*= $0000
.BYTE ‘M38503M2–’
Note : If the name of the product written to the EPROMs does not match the name of the mask confirmation form, the ROM
will not be processed.
❈ 2. Mark specification
Mark specification must be submitted using the correct form for the package being ordered. Fill out the appropriate
mark specification form (42P4B for M38503M2-XXXSP, 42P2R-A for M38503M2-XXXFP) and attach it to the mask
ROM confirmation form.
❈ 3. Usage conditions
Please answer the following questions about usage for use in our product inspection :
(1) How will you use the XIN-XOUT oscillator?
Ceramic resonator
Quartz crystal
External clock input
Other (
At what frequency?
)
MHz
f(XIN) =
(2) Which function will you use the pins P21 /XCIN and P20/XCOUT as P21 and P20, or XCIN and XCOUT ?
Ports P21 and P20 function
XCIN and XCOUT function (external resonator)
❈ 4. Comments
(2/2)
42
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MASK ROM CONFIRMATION FORM
GZZ-SH11-40A<6YA0>
Mask ROM number
740 FAMILY MASK ROM CONFIRMATION FORM
SINGLE-CHIP MICROCOMPUTER M38503M4-XXXSP/FP
MITSUBISHI ELECTRIC
Date:
Receipt
Section head Supervisor
signature
signature
Note : Please fill in all items marked ❈.
Date
issued
)
Date:
Submitted by
Issuance
signature
❈ Customer
TEL
(
Company
name
Supervisor
❈ 1. Confirmation
Specify the name of the product being ordered and the type of EPROMs submitted.
Three EPROMs are required for each pattern.
If at least two of the three sets of EPROMs submitted contain identical data, we will produce masks based on this data.
We shall assume the responsibility for errors only if the mask ROM data on the products we produce differs from this
data. Thus, extreme care must be taken to verify the data in the submitted EPROMs.
Microcomputer name:
M38503M4-XXXSP
M38503M4-XXXFP
Checksum code for entire EPROM
(hexadecimal notation)
EPROM type (indicate the type used)
27256
EPROM address
000016
Product name
000F16
001016
407F16
408016
7FFD16
7FFE16
7FFF16
ASCII code :
‘M38503M4-’
data
ROM (16K-130) bytes
27512
In the address space of the microcomputer, the internal
ROM area is from address C08016 to FFFD16 . The reset
vector is stored in addresses FFFC16 and FFFD16.
EPROM address
000016
Product name
000F16
001016
C07F16
C08016
FFFD16
FFFE16
FFFF16
ASCII code :
‘M38503M4-’
data
ROM (16K-130) bytes
Address
000016
000116
000216
000316
000416
000516
000616
000716
(1) Set the data in the unused area (the shaded area of
the diagram) to “FF16 ”.
(2) The ASCII codes of the product name “M38503M4–”
must be entered in addresses 000016 to 0008 16. And
set the data “FF16” in addresses 000916 to 000F16.
The ASCII codes and addresses are listed to the right
in hexadecimal notation.
‘M’ = 4D16
‘3’ = 33 16
‘8’ = 38 16
‘5’ = 35 16
‘0’ = 30 16
‘3’ = 33 16
‘M’ = 4D16
‘4’ = 34 16
Address
000816
000916
000A16
000B16
000C 16
000D 16
000E16
000F 16
‘–’ = 2D16
FF 16
FF 16
FF 16
FF 16
FF 16
FF 16
FF 16
(1/2)
43
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
GZZ-SH11-40A<6YA0>
Mask ROM number
740 FAMILY MASK ROM CONFIRMATION FORM
SINGLE-CHIP MICROCOMPUTER M38503M4-XXXSP/FP
MITSUBISHI ELECTRIC
We recommend the use of the following pseudo-command to set the start address of the assembler source program because ASCII codes of the product name are written to addresses 000016 to 0008 16 of EPROM.
EPROM type
27256
27512
The pseudo-command
*= $8000
.BYTE ‘M38503M4–’
*= $0000
.BYTE ‘M38503M4–’
Note : If the name of the product written to the EPROMs does not match the name of the mask confirmation form, the ROM
will not be processed.
❈ 2. Mark specification
Mark specification must be submitted using the correct form for the package being ordered. Fill out the appropriate
mark specification form (42P4B for M38503M4-XXXSP, 42P2R-A for M38503M4-XXXFP) and attach it to the mask
ROM confirmation form.
❈ 3. Usage conditions
Please answer the following questions about usage for use in our product inspection :
(1) How will you use the XIN-X OUT oscillator?
Ceramic resonator
Quartz crystal
External clock input
Other (
At what frequency?
)
f(XIN) =
MHz
(2) Which function will you use the pins P21/XCIN and P2 0/XCOUT as P21 and P20 , or XCIN and XCOUT ?
Ports P21 and P20 function
XCIN and XCOUT function (external resonator)
❈ 4. Comments
(2/2)
44
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
ROM PROGRAMMING CONFIRMATION FORM
GZZ-SH11-41A<6YA0>
ROM number
Date:
Section head Supervisor
signature
signature
Receipt
740 FAMILY ROM PROGRAMMING CONFIRMATION FORM
SINGLE-CHIP MICROCOMPUTER M38503E4-XXXSP/FP
MITSUBISHI ELECTRIC
Note : Please fill in all items marked ❈.
Date
issued
Date:
)
Submitted by
Issuance
signature
❈ Customer
TEL
(
Company
name
Supervisor
❈ 1. Confirmation
Specify the name of the product being ordered and the type of EPROMs submitted.
Three EPROMs are required for each pattern.
If at least two of the three sets of EPROMs submitted contain identical data, we will produce ROM programming based
on this data. We shall assume the responsibility for errors only if the programming data on the products we produce differs from this data. Thus, extreme care must be taken to verify the data in the submitted EPROMs.
Microcomputer name:
M38503E4-XXXSP
M38503E4-XXXFP
Checksum code for entire EPROM
(hexadecimal notation)
EPROM type (indicate the type used)
27256
EPROM address
000016
Product name
000F16
001016
407F16
408016
7FFD16
7FFE16
7FFF16
ASCII code :
‘M38503E4-’
data
ROM (16K-130) bytes
27512
In the address space of the microcomputer, the internal
ROM area is from address C08016 to FFFD16 . The reset
vector is stored in addresses FFFC16 and FFFD16 .
EPROM address
0000 16
Product name
000F16
001016
C07F16
C080 16
FFFD 16
FFFE 16
FFFF16
ASCII code :
‘M38503E4-’
data
ROM (16K-130) bytes
Address
000016
000116
000216
000316
000416
000516
000616
000716
(1) Set the data in the unused area (the shaded area of
the diagram) to “FF 16”.
(2) The ASCII codes of the product name “M38503E4–”
must be entered in addresses 000016 to 000816 . And
set the data “FF16” in addresses 000916 to 000F16 .
The ASCII codes and addresses are listed to the right
in hexadecimal notation.
‘M’ = 4D16
‘3’ = 3316
‘8’ = 3816
‘5’ = 3516
‘0’ = 3016
‘3’ = 3316
‘E’ = 4516
‘4’ = 3416
Address
000816
000916
000A16
000B16
000C16
000D16
000E16
000F16
‘–’ = 2D16
FF16
FF16
FF16
FF16
FF16
FF16
FF16
(1/2)
45
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
GZZ-SH11-41A<6YA0>
ROM number
740 FAMILY ROM PROGRAMMING CONFIRMATION FORM
SINGLE-CHIP MICROCOMPUTER M38503E4-XXXSP/FP
MITSUBISHI ELECTRIC
We recommend the use of the following pseudo-command to set the start address of the assembler source program because ASCII codes of the product name are written to addresses 0000 16 to 000816 of EPROM.
EPROM type
27256
27512
The pseudo-command
*= $8000
.BYTE ‘M38503E4–’
*= $0000
.BYTE ‘M38503E4–’
Note : If the name of the product written to the EPROMs does not match the name of the ROM programming confirmation
form, the ROM will not be processed.
❈ 2. Mark specification
Mark specification must be submitted using the correct form for the package being ordered. Fill out the appropriate
mark specification form; 42P2R-A for the M38503E4-XXXFP, the shrink DIP package Mark Specification Form (only for
built-in One Time PROM microcomputer) for the M38503E4-XXXSP; and attach it to the ROM programming confirmation form.
❈ 3. Usage conditions
Please answer the following questions about usage for use in our product inspection :
(1) How will you use the XIN-XOUT oscillator?
Ceramic resonator
Quartz crystal
External clock input
Other (
At what frequency?
)
MHz
f(XIN) =
(2) Which function will you use the pins P21 /XCIN and P20/XCOUT as P21 and P20, or XCIN and XCOUT ?
Ports P21 and P20 function
XCIN and XCOUT function (external resonator)
❈ 4. Comments
(2/2)
46
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MARK SPECIFICATION FORM
47
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
48
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
SHRINK DIP MARK SPECIFICATION FORM
for One Time PROM version microcomputers
Enter the catalog number of the microcomputer for which this mark specification is intended. (If you do not know the ROM code number,
enter XXX in its place.)
The catalog number of the microcomputer
M
A. Standard Mitsubishi Mark
Customer specified part number will be printed together with the ROM code number on the top line.
Enter the desired part number left aligned in the box below. (up to 10 characters)
Note2 :
RXXX
Mitsubishi catalog name
(blank model number before writing)
Mitsubishi lot number
(6-digit or 7-digit)
Note1 : The following characters can be used in the part number :
Uppercase alphabet, numbers, ampersand, hyphen, period, comma, +, /, (, ), 
( will be printed at 1.5 x character width)
2 : XXX is the ROM code number.
B. Special Mark Required
If you desire anything other than the standard Mitsubishi mark, it will be treated as a special mark.
Special marks will take longer to produce and should be avoided if possible.
If a special mark is to be printed, indicate the desired layout of the mark in the figure below. The layout will be duplicated as closely as
possible.
Note1 : If the customer’s trademark logo must be used in the Special Mark, please submit a clean original logo.
Note that special marks require extra cost and time to produce.
49
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PACKAGE OUTLINE
42P2R-A
Plastic 42pin 450mil SSOP
EIAJ Package Code
SSOP42-P-450-0.80
Weight(g)
0.63
JEDEC Code
–
Lead Material
Alloy 42/Cu Alloy
e
b2
22
E
HE
e1
I2
42
F
Recommended Mount Pad
Symbol
21
1
A
D
y
b
L
L1
e
A1
A2
c
A
A1
A2
b
c
D
E
e
HE
L
L1
y
b2
e1
I2
Detail F
42P4B
Dimension in Millimeters
Min
Nom
Max
–
–
2.4
0.05
–
–
–
2.0
–
0.35
0.4
0.5
0.13
0.15
0.2
17.3
17.5
17.7
8.2
8.4
8.6
–
0.8
–
11.63
11.93
12.23
0.3
0.5
0.7
–
1.765
–
–
–
0.15
0°
–
10°
–
0.5
–
–
11.43
–
–
1.27
–
Plastic 42pin 600mil SDIP
Lead Material
Alloy 42/Cu Alloy
Weight(g)
4.1
JEDEC Code
–
22
1
21
E
42
e1
c
EIAJ Package Code
SDIP42-P-600-1.78
Symbol
L
A1
A
A2
D
e
SEATING PLANE
50
b1
b
b2
A
A1
A2
b
b1
b2
c
D
E
e
e1
L
Dimension in Millimeters
Min
Nom
Max
–
–
5.5
0.51
–
–
–
3.8
–
0.35
0.45
0.55
0.9
1.0
1.3
0.63
0.73
1.03
0.22
0.27
0.34
36.5
36.7
36.9
12.85
13.0
13.15
–
1.778
–
–
15.24
–
3.0
–
–
0°
–
15°
MITSUBISHI MICROCOMPUTERS
3850 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
42S1B-A
Metal seal 42pin 600mil DIP
EIAJ Package Code
WDIP42-C-600-1.78
JEDEC Code
–
Weight(g)
1
21
e1
22
E
42
c
D
A1
L
A
A2
Symbol
Z
e
b
b1
SEATING PLANE
A
A1
A2
b
b1
c
D
E
e
e1
L
Z
Dimension in Millimeters
Min
Nom
Max
–
–
5.0
–
–
1.0
3.44
–
–
0.38
0.54
0.46
0.7
0.8
0.9
0.17
0.33
0.25
–
–
41.1
–
15.8
–
–
–
1.778
–
–
15.24
3.05
–
–
–
–
3.05
Keep safety first in your circuit designs!
● Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with
semiconductors may lead to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of
substitutive, auxiliary circuits, (ii) use of non-flammable material or (iii) prevention against any malfunction or mishap.
Notes regarding these materials
● These materials are intended as a reference to assist our customers in the selection of the Mitsubishi semiconductor product best suited to the customer’s application; they do not convey any license under any
intellectual property rights, or any other rights, belonging to Mitsubishi Electric Corporation or a third party.
● Mitsubishi Electric Corporation assumes no responsibility for any damage, or infringement of any third-party’s rights, originating in the use of any product data, diagrams, charts or circuit application examples
contained in these materials.
● All information contained in these materials, including product data, diagrams and charts, represent information on products at the time of publication of these materials, and are subject to change by Mitsubishi
Electric Corporation without notice due to product improvements or other reasons. It is therefore recommended that customers contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor
product distributor for the latest product information before purchasing a product listed herein.
● Mitsubishi Electric Corporation semiconductors are not designed or manufactured for use in a device or system that is used under circumstances in which human life is potentially at stake. Please contact
Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for
transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use.
● The prior written approval of Mitsubishi Electric Corporation is necessary to reprint or reproduce in whole or in part these materials.
● If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license from the Japanese government and cannot be imported into a country other than the
approved destination.
Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is prohibited.
● Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor for further details on these materials or the products contained therein.
© 1998 MITSUBISHI ELECTRIC CORP.
New publication, effective Aug. 1998.
Specifications subject to change without notice.
REVISION DESCRIPTION LIST
Rev.
No.
1.0
3850 GROUP DATA SHEET
Revision Description
First Edition
Rev.
date
980817
(1/1)
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