M37544G2AGP Renesas Electronics America, M37544G2AGP Datasheet - Page 21

• Manufacturer Part Number: M37544G2AGP
• Description: MCU 2/5V 8K 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37544G2AGP

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: WDT
• Number Of I /o: 25
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: QzROM
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

REJ03B0108-0103
page 19 of 72
7544 Group (QzROM version)
Table 7 Termination of unused pins
Termination of unused pins
• Termination of common pins
I/O ports:
Output ports: Open.
P0
P0
P0
P0
P1
P1
P1
P1
P1
P2
P2
P3
P3
P3
V
X
X
REF
IN
OUT
0
1
3
4
0
1
2
3
4
0
5
0
4
7
/TxD
/CNTR
, P0
/TX
/RxD
/S
/S
/CNTR
/AN
/AN
/INT
/INT
Pin
to P0
to P3
CLK
RDY
OUT
0
5
2
1
0
to
7
3
1
0
Select an input port or an output port and follow
each processing method.
I/O port
Vss.
When only on-
chip oscillator
is used,
connect to
V
registor.
When external
clock is input
or when only
on-chip
oscillator is
used, open.
Termination 1
(recommend)
CC
through a
Rev.1.03
When selecting CNTR
perform termination of input port.
When selecting TX
termination of output port.
When selecting R
termination of input port.
When selecting T
termination of output port.
When selecting external clock input, perform
termination of input port.
When selecting S
termination of output port.
When selecting CNTR
perform termination of input port.
When selecting AN function, perform
termination of input port.
When selecting INT
termination of input port.
When selecting INT
termination of input port.
Mar 31, 2009
Termination 2
RDY
X
X
OUT
-
-
D function, perform
-
-
-
-
D function, perform
1
0
function, perform
function, perform
function, perform
1
function, perform
0
input function,
input function,
Input ports: If the input level become unstable, through current
When selecting CNTR
perform termination of output port.
When selecting internal clock output,
perform termination of output port.
When selecting CNTR
perform termination of output port.
flow to an input circuit, and the power supply current
may increase.
Especially, when expecting low consumption current
(at STP or WIT instruction execution etc.), pull-up or
pull-down input ports to prevent through current
(built-in resistor can be used).
We recommend processing unused pins through a
resistor which can secure I
Because, when an I/O port or a pin which have an
output function is selected as an input port, it may
operate as an output port by incorrect operation etc.
Termination 3
-
-
-
-
-
-
-
-
-
-
-
-
-
1
0
output function,
output function,
OH(avg)
When selecting key-on
wakeup function, per-
form termination of input
port.
Termination 4
or I
OL(avg)
-
-
-
-
-
-
-
-
-
-
-
-
.