UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 642

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

642
If supply voltage fluctuation is 50 ms or less in vicinity of LVI detection voltage
Note A flowchart is shown on the next page.
Figure 22-11. Example of Software Processing After Reset Release (1/2)
No
(TMHE1 = 0
Setting 8-bit timer H1
50 ms has passed?
(to measure 50 ms)
Restarting timer H1
voltage or higher
processing <1>
(TMIFH1 = 1?)
processing <2>
Clearing WDT
Initialization
Initialization
(LVIF = 0?)
Setting LVI
Detection
Reset
CHAPTER 22 LOW-VOLTAGE DETECTOR
No
Yes
Preliminary User’s Manual U19111EJ2V1UD
LVI reset
TMHE1 = 1)
Yes
;
; Setting of detection level by LVIS.
; f
; The timer counter is cleared and the timer is started.
; Initial setting for ports,
Check the reset source
The low-voltage detector operates (LVION = 1).
Set the count clock and compare value so that
INTTMH1 occurs after 50 ms have elapsed.
Timer starts (TMHE1 = 1).
setting of division ratio of system clock,
such as setting of timer or A/D converter.
PRS
= Internal high-speed oscillation clock (default)
Note