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PDF M37274MA-xxxSP Data sheet ( Hoja de datos )
| Número de pieza | M37274MA-xxxSP | |
| Descripción | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER | |
| Fabricantes | Renesas | |
| Logotipo |  |
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To all our customers
Regarding the change of names mentioned in the document, such as Mitsubishi
Electric and Mitsubishi XX, to Renesas Technology Corp.
The semiconductor operations of Hitachi and Mitsubishi Electric were transferred to Renesas
Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog
and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.)
Accordingly, although Mitsubishi Electric, Mitsubishi Electric Corporation, Mitsubishi
Semiconductors, and other Mitsubishi brand names are mentioned in the document, these names
have in fact all been changed to Renesas Technology Corp. Thank you for your understanding.
Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been
made to the contents of the document, and these changes do not constitute any alteration to the
contents of the document itself.
Note : Mitsubishi Electric will continue the business operations of high frequency & optical devices
and power devices.
Renesas Technology Corp.
Customer Support Dept.
April 1, 2003
Free Datasheet http://www.datasheet4u.com/
1 page  
PRELIMINARYNSootimcee: pTahriasmisennotitcalimfinitasl asrpeecsiufibcjaetciot nto. change.
MITSUBISHI MICROCOMPUTERS
M37274MA-XXXSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
FUNCTIONS
Parameter
Number of basic instructions
Instruction execution time
Clock frequency
Memory size
Input/Output ports
ROM
RAM
ROM correction memory
OSD ROM
OSD RAM
P00–P02,
P04–P07
P03
I/O
I/O
P10, P15–P17
I/O
P11–P14
I/O
P2
P30, P31
P40–P44
P45, P46
P52–P55
P63
P64
I/O
I/O
Input
Input
Output
Input
Input
P70–P72
Serial I/O
Multi-master I2C-BUS interface
A-D converter
PWM output circuit
Timers
Subroutine nesting
Interrupt
Input
Clock generating circuit
Data slicer
Functions
71
0.5 µs (the minimum instruction execution time, at 8 MHz oscillation fre-
quency)
8 MHz (maximum)
40 K bytes
768 bytes
64 bytes
11072 bytes
1296 bytes
7-bit ! 1 (N-channel open-drain output structure, can be used as 8-bit
PWM output pins)
1-bit ! 1
(CMOS input/output structure, can be used as 14-bit PWM output pin)
4-bit ! 1 (CMOS input/output structure, can be used as OSD output pin,
INT input pin, serial input pin)
4-bit ! 1 (N-channel open-drain output structure, can be used as multi-
master I2C-BUS interface)
8-bit ! 1 (CMOS input/output structure, can be used as A-D input pins)
2-bit ! 1 (CMOS input/output structure)
5-bit ! 1 (can be used as A-D input pins, INT input pins, external clock
input pins)
2-bit ! 1 (N-channel open-drain output structure when serial I/O is used,
can be used as serial I/O pins)
4-bit ! 1 (CMOS output structure, can be used as OSD output)
1-bit ! 1 (can be used as sub-clock input pin, OSD clock input pin)
1-bit ! 1 (CMOS output structure when LC is oscillating, can be used as
sub-clock output pin, OSD clock output pin)
3-bit ! 1 (can be used as data slicer input/output)
8-bit ! 1
1
6 channels (8-bit resolution)
14-bit ! 1, 8-bit ! 7
8-bit timer ! 6
128 levels (maximum)
External interrupt ! 3, Internal timer interrupt ! 6, Serial I/O interrupt ! 1,
OSD interrupt ! 1, Multi-master I2C-BUS interface interrupt ! 1,
Data slicer interrupt ! 1, f(XIN)/4092 interrupt ! 1, VSYNC interrupt ! 1, A-
D conversion interrupt ! 1, BRK instruction interrupt ! 1
2 built-in circuits (externally connected to a ceramic resonator or a quartz-
crystal oscillator)
Built in
4
5 Page 
PRELIMINARYNSootimcee: pTahriasmisennotitcalimfinitasl asrpeecsiufibcjaetciot nto. change.
MITSUBISHI MICROCOMPUTERS
M37274MA-XXXSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
FUNCTIONAL DESCRIPTION
Central Processing Unit (CPU)
The M37274MA-XXXSP uses the standard 740 Family instruction
set. Refer to the table of 740 Family addressing modes and machine
instructions or the SERIES 740 <Software> User’s Manual for de-
tails on the instruction set.
Machine-resident 740 Family instructions are as follows:
The FST, SLW instruction cannot be used.
The MUL, DIV, WIT and STP instructions can be used.
CPU Mode Register
The CPU mode register contains the stack page selection bit and
internal system clock selection bit. The CPU mode register is allo-
cated at address 00FB16.
70
11
CPU mode register
0 0 (CPUM (CM) : address 00FB 16)
Processor mode bits
b1 b0
0 0 : Single-chip mode
0 1:
1 0 : Not available
1 1:
Stack page selection bit (Note)
0 : Zero page
1 : 1 page
Fix these bits to “1.”
XCOUT drivability selection bit
0 : LOW drive
1 : HIGH drive
Main colock (XIN–XOUT) stop bit
0 : Oscillating
1 : Stopped
Internal system clock selection bit
0 : XIN–XOUT selected (high-speed mode)
1 : XCIN–XCOUT selected (low-speed mode)
Note: This bit is set to “1” after the reset release.
Fig. 3. CPU Mode Register
10
11 Page | ||
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