UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 547
UPD78F0537DGA(T)-9EV-A
Manufacturer Part Number
UPD78F0537DGA(T)-9EV-A
Description
8BIT MCU, 128K FLASH, 7KB RAM, SMD
Manufacturer
NEC
Datasheet
1.UPD78F0535GBT-UEU-A.pdf
(773 pages)
Specifications of UPD78F0537DGA(T)-9EV-A
Controller Family/series
UPD78
No. Of I/o's
55
Ram Memory Size
7KB
Cpu Speed
20MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
128KB
Oscillator Type
External, Internal
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24.2 Configuration of Low-Voltage Detector
24.3 Registers Controlling Low-Voltage Detector
(1) Low-voltage detection register (LVIM)
V
DD
The block diagram of the low-voltage detector is shown in Figure 24-1.
The low-voltage detector is controlled by the following registers.
• Low-voltage detection register (LVIM)
• Low-voltage detection level selection register (LVIS)
• Port mode register 12 (PM12)
This register sets low-voltage detection and the operation mode.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
The generation of a reset signal other than an LVI reset clears this register to 00H.
Low-voltage detection level
selection register (LVIS)
EXLVI/P120/
INTP0
Figure 24-1. Block Diagram of Low-Voltage Detector
CHAPTER 24 LOW-VOLTAGE DETECTOR
User’s Manual U17260EJ6V0UD
Reference
voltage
source
Internal bus
N-ch
+
−
V
DD
Low-voltage detection register
(LVIM)
Internal reset signal
INTLVI
547
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