upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 431
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upd78f0730
Manufacturer Part Number
upd78f0730
Description
8-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0730.pdf
(518 pages)
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16.2 Configuration of Power-on-Clear Circuit
16.3 Operation of Power-on-Clear Circuit
In 2.7 V/1.59 V POC mode (option byte: POCMODE = 1)
The block diagram of the power-on-clear circuit is shown in Figure 16-1.
• An internal reset signal is generated on power application.
• The supply voltage (V
The timing of generation of the internal reset signal by the power-on-clear circuit and low-voltage detector is
shown below.
detection voltage (V
internal reset signal is generated. It is released when V
V
DD
DDPOC
DD
Figure 16-1. Block Diagram of Power-on-Clear Circuit
) and detection voltage (V
= 2.7 V ±0.2 V), the reset status is released.
Reference
voltage
source
CHAPTER 16 POWER-ON-CLEAR CIRCUIT
Preliminary User’s Manual U19014EJ1V0UD
+
−
V
DD
POC
= 1.59 V ±0.15 V) are compared. When V
DD
≥ V
DDPOC
When the supply voltage (V
.
Internal reset signal
DD
) exceeds the
DD
< V
POC
, the
431
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