UPD78F0138 NEC, UPD78F0138 Datasheet - Page 483

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

POC Circuit Characteristics (T
Notes 1.
POC Circuit Timing
Detection voltage
Power supply rise time
Response delay time 1
Response delay time 2
Minimum pulse width
2.
3.
CHAPTER 29 ELECTRICAL SPECIFICATIONS (STANDARD PRODUCTS, (A) GRADE PRODUCTS)
Parameter
When flash memory version
78F0134M6(A), 78F0138M5(A), or 78F0138M6(A) is used
When flash memory version
78F0134M4(A), 78F0138M3(A), or 78F0138M4(A) is used
Time required from voltage detection to reset release.
Detection voltage (MAX.)
Detection voltage (TYP.)
Detection voltage (MIN.)
Note 3
Note 3
Supply voltage
(V
A
DD
= −40 to +85°C)
V
V
t
t
t
t
Symbol
)
PTH
PTHD
PD
PW
POC0
POC1
µ
µ
Mask option = 3.5 V
Mask option = 2.85 V
V
V
When power supply rises, after reaching
detection voltage (MAX.)
When V
PD78F0134M5, 78F0134M6, 78F0138M5, 78F0138M6, 78F0134M5(A),
PD78F0134M3, 78F0134M4, 78F0138M3, 78F0138M4, 78F0134M3(A),
DD
DD
User’s Manual U16228EJ2V0UD
: 0 V → 2.7 V
: 0 V → 3.3 V
t
PTH
DD
falls
Conditions
t
PTHD
Note 1
Note 2
t
PD
t
PW
0.0015
0.002
MIN.
3.3
2.7
0.2
TYP.
2.85
3.5
Time
MAX.
3.7
3.0
3.0
1.0
Unit
ms
ms
ms
ms
ms
V
V
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