UPD78F1201MC-CAB-AX Renesas Electronics America, UPD78F1201MC-CAB-AX Datasheet - Page 941

• Manufacturer Part Number: UPD78F1201MC-CAB-AX
• Description: MCU 16BIT 78K0R/LX3 30-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Ix3r

Specifications of UPD78F1201MC-CAB-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(2) When detecting level of input voltage from external input pin (EXLVI)
• When starting operation
• When stopping operation
Be sure to clear (0) LVION by using a 1-bit memory manipulation instruction.
Figure 21-8 shows the timing of the interrupt signal generated by the low-voltage detector. The numbers in
this timing chart correspond to <1> to <7> above.
Caution Input voltage from external input pin (EXLVI) must be EXLVI < V
<1>
<2>
<3>
<4>
<5>
<6>
<7>
<8>
Clear bit 1 (LVIMD) of LVIM to 0 (generates interrupt signal when the level is detected) (default value).
Set bit 2 (LVISEL) of the low-voltage detection register (LVIM) to 1 (detects level of input voltage from
Confirm that “input voltage from external input pin (EXLVI) ≥ detection voltage (V
Mask the LVI interrupt (LVIMK = 1).
external input pin (EXLVI)).
Set bit 7 (LVION) of LVIM to 1 (enables LVI operation).
Use software to wait for the following periods of time (Total 210
(TYP.))” when detecting the falling edge of EXLVI, or “input voltage from external input pin (EXLVI) <
detection voltage (V
LVIM.
Clear the interrupt request flag of LVI (LVIIF) to 0.
Release the interrupt mask flag of LVI (LVIMK).
Execute the EI instruction (when vector interrupts are used).
• Operation stabilization time (10
• Minimum pulse width (200
EXLVI
CHAPTER 21 LOW-VOLTAGE DETECTOR
= 1.21 V (TYP.))” when detecting the rising edge of EXLVI, at bit 0 (LVIF) of
User’s Manual U19678EJ1V1UD
μ
s (MIN.))
μ
s (MAX.))
μ
s).
DD
.
EXLVI
= 1.21 V
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