PRE
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ion. hange
icat
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ecif ject to
p
al s
ub
a fin re s
not imits a
is c l
This enti
m
ice:
Not e para
Som
LIM
ARY
IN
MITSUBISHI MICROCOMPUTERS
M37274EFSP
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
ROM
RAM
ROM correction memory
OSD ROM
OSD RAM
Input/Output ports
P0
0
–P0
2
,
P0
4
–P0
7
P0
3
P1
0
, P1
5
–P1
7
P1
1
–P1
4
P2
P3
0
, P3
1
P4
0
–P4
4
P4
5
, P4
6
P5
2
–P5
5
P6
3
P6
4
P7
0
–P7
2
Serial I/O
Multi-master I
2
C-BUS interface
A-D converter
PWM output circuit
Timers
Subroutine nesting
Interrupt
I/O
I/O
I/O
I/O
I/O
I/O
Input
Input
Output
Input
Input
Input
Functions
71
0.5
µs
(the minimum instruction execution time, at 8 MHz oscillation fre-
quency)
8 MHz (maximum)
60 K bytes
1024 bytes
64 bytes
11072 bytes
1920 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 I
2
C-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 I
2
C-BUS interface interrupt
!
1,
Data slicer interrupt
!
1, f(X
IN
)/4092 interrupt
!
1, V
SYNC
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
Clock generating circuit
Data slicer
4
RENESAS [ RENESAS TECHNOLOGY CORP ]
