MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
FUNCTIONS
Parameter
Functions
Number of basic instructions
Instruction execution time
71
0.5 µs (the minimum instruction execution time, at 8 MHz oscillation fre-
quency)
Clock frequency
Memory size
8 MHz (maximum)
60 K bytes
ROM
RAM
1024 bytes
OSD ROM
OSD RAM
14464 bytes
1920 bytes
Input/Output ports
P00–P02,
P04–P07
7-bit ✕ 1 (N-channel open-drain output structure, can be used as PWM
output pins)
I/O
P03
1-bit ✕ 1 (CMOS input/output structure)
I/O
I/O
P10, P15–P17
4-bit ✕ 1 (CMOS input/output structure, can be used as OSD output pin,
INT input pin, serial input pin)
P11–P14
4-bit ✕ 1 (N-channel open-drain output structure, can be used as multi-
master I C-BUS interface)
I/O
I/O
2
P2
8-bit ✕ 1 (CMOS input/output structure, can be used as A-D input pins)
2-bit ✕ 1 (CMOS input/output structure)
P30, P31
P32
I/O
Output
1-bit ✕ 1 (N-channel open-drain output structure)
Input
P40–P44
5-bit ✕ 1 (can be used as A-D input pins, INT input pins, external clock
input pins)
Input
P45, P46
2-bit ✕ 1 (N-channel open-drain output structure when serial I/O is used,
can be used as serial I/O pins)
Output
Output
P47
1-bit ✕ 1 (N-channel open-drain output structure)
P50, P51, P56,
P57
4-bit ✕ 1 (N-channel open-drain output structure, can be used as PWM
output pins)
Output
Output
P52–P55
4-bit ✕ 1 (CMOS output structure, can be used as OSD output)
6-bit ✕ 1 (N-channel open-drain output)
P60–P62,
P65–P67
Input
Input
P63
P64
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)
Serial I/O
8-bit ✕ 1
2
Multi-master I C-BUS interface
1
A-D converter
PWM output circuit
Timers
4 channels (8-bit resolution)
8-bit ✕ 8
8-bit timer ✕ 6
Subroutine nesting
128 levels (maximum)
Interrupt interval determination circuit
Interrupt
1
External interrupt ✕ 3, Internal timer interrupt ✕ 6, Serial I/O interrupt ✕ 1,
OSD interrupt ✕ 1, Multi-master I C-BUS interface interrupt ✕ 1,
2
Data slicer interrupt ✕ 1, f(XIN)/4092 interrupt ✕ 1, VSYNC interrupt ✕ 1, A-
D conversion interrupt ✕ 1, BRK instruction interrupt ✕ 1
Clock generating circuit
Data slicer
2 built-in circuits (externally connected a ceramic resonator or a quartz-
crystal oscillator)
Built in
4
RENESAS [ RENESAS TECHNOLOGY CORP ]
