upd78f0134hgka1-9et-a Renesas Electronics Corporation., upd78f0134hgka1-9et-a Datasheet - Page 407

• Manufacturer Part Number: upd78f0134hgka1-9et-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

22.2 Configuration of Power-on-Clear Circuit
22.3 Operation of Power-on-Clear Circuit
V
POC detection voltage
POC
Supply voltage (V
Internal reset signal
The block diagram of the power-on-clear circuit is shown in Figure 22-1.
In the power-on-clear circuit, the supply voltage (V
, an internal reset signal is generated.
(V
Figure 22-2. Timing of Internal Reset Signal Generation in Power-on-Clear Circuit
POC
DD
)
)
V
DD
Figure 22-1. Block Diagram of Power-on-Clear Circuit
Reference
voltage
source
CHAPTER 22 POWER-ON-CLEAR CIRCUIT
User’s Manual U16899EJ3V0UD
+
V
DD
DD
) and detection voltage (V
Internal reset signal
POC
) are compared, and when V
Time
DD
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