m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 423

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

Notes 1: When there is a possibility that the user reset signal becomes “L” level in the flash memory serial I/O
FLASH MEMORY VERSION
19.3 Flash memory serial I/O mode
Table 19.3.1 Pin description in flash memory serial I/O mode
19-20
P2
P4OUT
V
V
MD0
MD1
RESET
X
X
V
AV
AV
V
P1
P2
P2
P2
P2
P4
P5
P5
P6
P7
P8
P6OUT
CC
SS
IN
OUT
CONT
REF
7
0
0
4
5
6
0
1
5
0
0
CC
SS
0
to P7
to P1
to P4
to P5
to P5
to P6
to P8
Pin
to P2
2: For pins not used in the flash memory serial I/O mode, properly connect to somewhere in the user
CUT
CUT
mode, be sure to cut off the current flow between the user reset signal and pin RESET by using a
jumper switch, etc. (Refer to section “19.3.2 Examples of handling control pins in flash memory
serial I/O mode.”)
system. For pins not used in the user system, handle them with reference to section “5.3 Examples of
handling unused pins.” For pins used in the flash memory serial I/O mode, handle them with reference
to section “19.3.2 Examples of handling control pins in flash memory serial I/O mode.”
7
7
7
3
7
7
3
,
3,
Power supply input
MD0
MD1
Reset input
Clock input
Clock output
Filter circuit connection
Analog supply input
Reference voltage input
Input port P1
Input port P2
SCLK input
SDA I/O
BUSY output
Input port P4
Input port P5
Input port P6
Input port P7
Input port P8
P4OUT
P6OUT
Name
CUT
CUT
input
input
Input/Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
I/O
—
7905 Group User’s Manual Rev.1.0
Supply V
Supply V
Connect this pin to V
Connect this pin to V
The reset input pin (Note 1).
Connect a ceramic resonator or quartz-crystal oscillator between
X
must be input to X
The V
Connect this pin to V
Connect this pin to V
The V
Input port pins. (Not used in this mode.)
The input pin for a serial clock.
The I/O pin for serial data. This pin must be connected with V
a resistor (about 1 k ).
The BUSY signal output pin.
Input port pins. (Not used in this mode.)
The P4OUT
Recommended to be connected with V
The P6OUT
Recommended to be connected with V
IN
and X
CONT
REF
CC
SS
pin. (Not used in this mode.)
OUT
pin. (Not used in this mode.)
level voltage to pin Vss.
level voltage to pin Vcc.
CUT
CUT
pins. When using an external clock, the clcok source
pin. (Not used in this mode.)
pin. (Not used in this mode.)
IN
pin and X
SS
SS
CC
SS
.
.
.
via a resistor (about 10 k
Functions
OUT
pin must be left open.
CC
CC
via a resistor.
via a resistor.
to 100 k ).
CC
via