M51951A,B/M51952A,B
Circuit Current vs. Ambient Temperature
(M51951B, M51952B)
700
Circuit Current I
CC
(µA)
600
500
400
300
200
100
0
–40 –20
0
20
40
60
80 100
V
CC
= 5V
Ambient Temperature Ta (°C)
Example of Application Circuit
Reset Circuit of M5195xx Series
V
CC
Supply
voltage
M51951x
M51952x
GND
Output
R
L
Supply
voltage
RESET (RESET)
Logic circuit
GND
Figure 1 Reset Circuit of M5195xx Series
Notes: 1. When the detecting supply voltage is 4.25 V, M51951, M51952, M51953 and M51954 are used.
When the voltage is anything except 4.25 V, M51955, M51956, M51957 and M51958 are used.
2. When the delay time is short, M51951, M51952, M51955 and M51956 are available. These ICs have a
delay capacity and the delay time is about 200
µs.
If a longer delay time is necessary, M51953, M51954, M51957 and M51958 are used.
3. If the M5195xx and the logic circuit share a common power source, type A (built-in load type) can be used
whether a pull-up resistor is included in the logic circuit or not.
4. The logic circuit preferably should not have a pull-down resistor, but if one is present, add load resistor R
L
to
overcome the pull-down resistor.
5. When the reset terminal in the logic circuit is of the low reset type, M51951, M51953, M51955 and M51957
are used and when the terminal is of the high reset type, M51952, M51954, M51956 and M51958 are used.
6. When a negative supply voltage is used, the supply voltage side of M5195xx and the GND side are
connected to negative supply voltage respectively.
REJ03D0775-0400 Rev.4.00 Sep 18, 2007
Page 5 of 7
RENESAS [ RENESAS TECHNOLOGY CORP ]
