UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 120

• Manufacturer Part Number: UPD78F9502MA-CAC-A
• Description: 8BIT MCU, 4K FLASH, 128B RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F9502MA-CAC-A

• Controller Family/series: UPD78F
• No. Of I/o's: 8
• Ram Memory Size: 128Byte
• Cpu Speed: 10MHz
• No. Of Timers: 2
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

11.2 Configuration of Power-on-Clear Circuit
11.3 Operation of Power-on-Clear Circuit
and an internal reset signal is generated when V
120
POC detection voltage
(V
Internal reset signal
Supply voltage (V
The block diagram of the power-on-clear circuit is shown in Figure 11-1.
In the power-on-clear circuit, the supply voltage (V
POC
= 2.1 V ±0.1 V)
Figure 11-2. Timing of Internal Reset Signal Generation in Power-on-Clear Circuit
DD
)
V
DD
Figure 11-1. Block Diagram of Power-on-Clear Circuit
Reference
voltage
source
CHAPTER 11 POWER-ON-CLEAR CIRCUIT
Preliminary User’s Manual U18681EJ1V0UD
DD
+
< V
V
DD
DD
POC
) and detection voltage (V
, and an internal reset is released when V
Internal reset signal
POC
= 2.1 V 0.1 V) are compared,
DD
≥ V
POC
.
Time