upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 317

• Manufacturer Part Number: upd78f0103hmca1-5a4-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

18.2 Configuration of Power-on-Clear Circuit
18.3 Operation of Power-on-Clear Circuit
V
POC detection voltage
POC
Supply voltage (V
Internal reset signal
A block diagram of the power-on-clear circuit is shown in Figure 18-1.
In the power-on-clear circuit, the supply voltage (V
, an internal reset signal is generated.
(V
Figure 18-2. Timing of Internal Reset Signal Generation in Power-on-Clear Circuit
POC
DD
)
)
V
DD
Figure 18-1. Block Diagram of Power-on-Clear Circuit
Reference
voltage
source
CHAPTER 18 POWER-ON-CLEAR CIRCUIT
User’s Manual U16846EJ3V0UD
+
−
V
DD
DD
) and detection voltage (V
Internal reset signal
POC
) are compared, and when V
Time
DD
317
<