UPD78F0138HGK-9ET-A Renesas Electronics America, UPD78F0138HGK-9ET-A Datasheet - Page 420

• Manufacturer Part Number: UPD78F0138HGK-9ET-A
• Description: MCU 8BIT 60K FLASH 64TQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx1+r

Specifications of UPD78F0138HGK-9ET-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: 3-Wire SIO, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 42
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

418
Note 1
If supply voltage fluctuation is 50 ms or less in vicinity of LVI detection voltage
Notes 1.
2.
No
If reset is generated again during this period, initialization processing is not started.
A flowchart is shown on the next page.
Figure 23-6. Example of Software Processing After Release of Reset (1/2)
50 ms has passed?
Check stabilization
Change CPU clock
Checking cause
(TMIFH1 = 1?)
(set to 50 ms)
of oscillation
of reset
Initialization
processing
Start timer
Reset
LVI
Yes
Note 2
CHAPTER 23 LOW-VOLTAGE DETECTOR
User’s Manual U16899EJ3V0UD
; The
;
;
;
;
;
;
The cause of reset (power-on-clear, WDT, LVI, or clock monitor)
can be identified by the RESF register.
8-bit timer H1 can operate with the internal oscillation clock.
Source: f
(f
Check the stabilization of oscillation of the high-speed system clock
Change the CPU clock from the internal oscillation clock to the high-speed
TMIFH1 = 1: Interrupt request is generated.
Initialization of ports
by using the OSTC register.
system clock.
R
: internal oscillation clock oscillation frequency)
internal oscillation clock is set as the CPU clock when the reset signal is generated
R
(480 kHz (MAX.))/2
7
compare value 200 = 53 ms