M37212 Mitsubishi, M37212 Datasheet - Page 72
![no-image](/images/manufacturer_photos/0/4/451/mitsubishi_sml.jpg)
M37212
Manufacturer Part Number
M37212
Description
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
Manufacturer
Mitsubishi
Datasheet
1.M37212.pdf
(119 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
M37212EFFP
Manufacturer:
OK
Quantity:
269
Part Number:
M37212M4-052SP
Manufacturer:
RENASAS
Quantity:
20 000
Company:
Part Number:
M37212M6-105SP
Manufacturer:
ST
Quantity:
100
Company:
Part Number:
M37212M6-117SP
Manufacturer:
OKI
Quantity:
172
Part Number:
M37212M6-117SP
Manufacturer:
MIT
Quantity:
20 000
Company:
Part Number:
M37212M6-204FP
Manufacturer:
MIT
Quantity:
292
Company:
Part Number:
M37212M8-051SP
Manufacturer:
RENESAS
Quantity:
765
Part Number:
M37212M8-051SP
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
M37212M8-055SP
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
M37212MA-052SP
Manufacturer:
RENASAS
Quantity:
20 000
8.11 SOFTWARE RUNAWAY DETECT FUNCTION
This microcomputer has a function to decode undefined instructions
to detect a software runaway.
When an undefined op-code is input to the CPU as an instruction
code during operation, the following processing is done.
Note, however, that the software runaway detecting function cannot
be invalid.
Fig. 8.11.1 Sequence at Detecting Software Runaway Detection
72
The CPU generates an undefined instruction decoding signal.
The device is internally reset because of occurrence of the unde-
fined instruction decoding signal.
As a result of internal reset, the same reset processing as in the
case of ordinary reset operation is done, and the program restarts
from the reset vector.
A d d r e s s
S Y N C
D a t a
U n d e f i n e d i n s t r u c t i o n d e c o d i n g s i g n a l
o c c u r s . I n t e r n a l r e s e t s i g n a l o c c u r s .
P C
?
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
?
0 1 , S
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
P C
H
0 1 , S – 1
P C
L
0 1 , S – 2
R e s e t s e q u e n c e
A D
L
P S
, A D
P C
S
?
F F F E
H
: I n v a l i d
: S t a c k p o i n t e r
: J u m p d e s t i n a t i o n a d d r e s s o f r e s e t
: U n d e f i n e d i n s t r u c t i o n d e c o d e
: P r o g r a m c o u n t e r
with ON-SCREEN DISPLAY CONTROLLER
1 6
A D
MITSUBISHI MICROCOMPUTERS
L
F F F F
M37212EFSP/FP
1 6
A D
H
A D
A D
H
L
,
Rev. 1.0