M37544 RENESAS [Renesas Technology Corp], M37544 Datasheet - Page 54

• Manufacturer Part Number: M37544
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev.1.04
REJ03B0012-0104Z
7544 Group
Note: As for AD translation accuracy, on the following operating conditions, accuracy may become low.
Timing Requirements
Table 15 Timing requirements (V
Note: In this time, bit 6 of the serial I/O control register (address 001A
A/D Converter Characteristics
Table 14 A/D Converter characteristics (V
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
—
ABS
t
R
I
I
W
C
WH
WL
C
WH
WL
C
WH
WL
C
WH
WL
su
h
Symbol
CONV
VREF
I(AD)
(S
(X
(CNTR
(CNTR
(S
LADDER
(RESET)
(RxD–S
______
(X
(CNTR
(CNTR
(S
(1) Since the analog circuit inside a microcomputer becomes sensitive to noise when V
(2) When V
(X
(CNTR
(CNTR
(S
CLK
When bit 6 of the serial I/O control register is “0” (clock asynchronous serial I/O is selected), the rating values are divided by 4.
IN
CLK
Symbol
IN
CLK
IN
CLK
)
)
–RxD)
accuracy may become low rather than the case where V
the time of room temperature. The use beyond V
is assumed to be.
)
)
0
1
)
)
)
)
0
1
CLK
0
1
2004.06.08
)
)
)
)
Resolution
Absolute accuracy
(quantification error excluded)
Conversion time
Ladder resistor
Reference power source
input current
A/D port input current
)
REF
voltage is less than [ 3.0V ], the accuracy at the time of low temperature may become extremely low compared with
Reset input “L” pulse width
External clock input cycle time
External clock input “H” pulse width
External clock input “L” pulse width
CNTR
CNTR
CNTR
CNTR
CNTR
CNTR
Serial I/O clock input cycle time (Note)
Serial I/O clock input “H” pulse width (Note)
Serial I/O clock input “L” pulse width (Note)
Serial I/O input set up time
Serial I/O input hold time
page 54 of 66
0
0
0
1
1
1
Parameter
, INT
, INT
input cycle time
input cycle time
input “H” pulse width
input “L” pulse width
CC
0
0
, INT
, INT
= 4.0 to 5.5 V, V
1
1
, input “H” pulse width
, input “L” pulse width
CC
= 4.0 to 5.5 V, V
Parameter
SS
= 0 V, Ta = –20 to 85 °C, unless otherwise noted)
REF
Ta = –20 to 85 °C, Vcc = V
V
V
=3.0V is recommended in the system the use by the side of low temperature
16
REF
REF
) is set to “1” (clock synchronous serial I/O is selected).
SS
REF
= 5.0 V
= 3.0 V
= 0 V, Ta = –20 to 85 °C, unless otherwise noted)
Test conditions
voltage and Vcc voltage are set up to the same value..
REF
REF
Min.
2000
Min.
50
30
125
200
800
800
800
370
370
220
100
voltage is set up lower than Vcc voltage,
50
50
80
80
2
Limits
Typ.
135
Limits
37
80
Typ.
Max.
109
200
120
5.0
±3
8
Max.
tc(X
LSB
Unit
Bits
k
µA
µA
Unit
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
IN
)