UPD78F1211MC-GAA-AX Renesas Electronics America, UPD78F1211MC-GAA-AX Datasheet - Page 937

• Manufacturer Part Number: UPD78F1211MC-GAA-AX
• Description: MCU 16BIT 78K0R/LX3 38-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Ix3r

Specifications of UPD78F1211MC-GAA-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: 27
• 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 8x10b
• 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
Figure 21-6 shows the timing of the internal reset signal generated by the low-voltage detector. The numbers
in this timing chart correspond to <1> to <6> above.
Cautions 1. Be sure to execute <1>. When LVIMK = 0, an interrupt may occur immediately after the
<1>
<2>
<3>
<4>
<5>
<6>
Be sure to clear (0) LVIMD and then LVION by using a 1-bit memory manipulation instruction.
Use software to wait for the following periods of time (Total 210
Wait until it is checked that (input voltage from external input pin (EXLVI) ≥ detection voltage (V
Set bit 1 (LVIMD) of LVIM to 1 (generates reset signal when the level is detected).
Mask the LVI interrupt (LVIMK = 1).
Set bit 2 (LVISEL) of the low-voltage detection register (LVIM) to 1 (detects level of input voltage from
external input pin (EXLVI)).
Set bit 7 (LVION) of LVIM to 1 (enables LVI operation).
1.21 V (TYP.))) by bit 0 (LVIF) of LVIM.
• Operation stabilization time (10
• Minimum pulse width (200
2. If input voltage from external input pin (EXLVI) ≥ detection voltage (V
3. Input voltage from external input pin (EXLVI) must be EXLVI < V
processing in <3>.
when LVIMD is set to 1, an internal reset signal is not generated.
CHAPTER 21 LOW-VOLTAGE DETECTOR
User’s Manual U19678EJ1V1UD
μ
s (MIN.))
μ
s (MAX.))
μ
s).
DD
.
EXLVI
= 1.21 V (TYP.))
EXLVI
935
=