PRE
.
.
tion hange
c
ifica
pec ject to
al s sub
a fin
e
not mits ar
is
i
This etric l
m
ice:
Not e para
Som
LIM
ARY
IN
MITSUBISHI MICROCOMPUTERS
M37905F8CFP, M37905F8CSP
16-BIT CMOS MICROCOMPUTER
DESCRIPTION
These are single-chip 16-bit microcomputers designed with high-per-
formance CMOS silicon gate technology, including the internal flash
memory and, being packaged in 64-pin plastic molded QFP or shrink
plastic molded DIP. These microcomputers support the 7900 Series
instruction set, which are enhanced and expanded instruction set
and are upper-compatible with the 7700/7751 Series instruction set.
The CPU of these microcomputers is a 16-bit parallel processor that
can also be switched to perform 8-bit parallel processing. Also, the
bus interface unit of these microcomputers enhances the memory
access efficiency to execute instructions fast. Therefore, these mi-
crocomputers are suitable for office, business, and industrial equip-
ment controller that require high-speed processing of large data.
Also, they are suitable for motor-control equipment since each of
them includes the motor control circuit.
For the internal flash memory, single-power-supply programming
and erasure, using a PROM programmer or the control by the cen-
tral processing unit (CPU), is supported. Also, each of these micro-
computers has the memory area dedicated for storing a certain
software which controls programming and erasure (reprogramming
control software). Therefore, on these microcomputers, the program
can easily be changed even after they are mounted on the board.
<Flash memory mode>
Power supply voltage .................................................. 5 V ± 0.5 V
Programming/Erase voltage ........................................ 5 V ± 0.5 V
Programming method .................... Programming in a unit of word
Erase method ............................................ Block erase or Total erase
M37905F8CFP, M37905F8CSP
............... 4 blocks (8 Kbytes
✕
2, 16 Kbytes
✕
1, 28 Kbytes
✕
1)
Programming/Erase control by software command
Maximum number of reprograms ............................................ 100
•
•
•
•
•
•
APPLICATION
•
Control devices for office equipment such as copiers and facsimiles
•
Control devices for industrial equipment such as communication
•
and measuring instruments
Control devices for equipment, requiring motor control, such as
inverter air conditioners and general-purpose inverters
DISTINCTIVE FEATURES
<Microcomputer mode>
Number of basic machine instructions .................................... 203
Memory
Flash memory (User ROM area) ................................... 60 Kbytes
RAM ............................................................................. 3072 bytes
Flash memory (Boot ROM area) ..................................... 8 Kbytes
Instruction execution time
The fastest instruction at 20 MHz frequency ........................ 50 ns
Single power supply .................................................... 5 V ± 0.5 V
Interrupts ........... 8 external sources, 23 internal sources, 7 levels
Multi-functional 16-bit timer ................................................. 10 + 3
(Three-phase motor drive waveform or Pulse motor drive waveform
output is available.)
Serial I/O (UART or Clock synchronous) ..................................... 3
10-bit A-D converter .......................................... 12-channel inputs
8-bit D-A converter ............................................ 2-channel outputs
12-bit watchdog timer
Programmable input/output (ports P1, P2, P4, P5, P6, P7, P8) ...... 50
•
•
•
•
•
•
•
•
•
•
•
RENESAS [ RENESAS TECHNOLOGY CORP ]
