UPD78F1211GB-GAF-AX Renesas Electronics America, UPD78F1211GB-GAF-AX Datasheet - Page 927
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UPD78F1211GB-GAF-AX
Manufacturer Part Number
UPD78F1211GB-GAF-AX
Description
MCU 16BIT 78K0R/LX3 44-LQFP
Manufacturer
Renesas Electronics America
Series
78K0R/Ix3r
Datasheet
1.UPD78F1201MC-CAB-AX.pdf
(1067 pages)
Specifications of UPD78F1211GB-GAF-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
33
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 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F1211GB-GAF-AX
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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20.4 Cautions for Power-on-Clear Circuit
voltage (V
from release of reset to the start of the operation of the microcontroller can be arbitrarily set by taking the following
action.
Note 1
In a system where the supply voltage (V
<Action>
• If supply voltage fluctuation is 50 ms or less in vicinity of POC detection voltage
Notes 1.
Remark n = 00 to 11
After releasing the reset signal, wait for the supply voltage fluctuation period of each system by means of a
software counter that uses a timer, and then initialize the ports.
POR
2.
, V
If reset is generated again during this period, initialization processing <2> is not started.
A flowchart is shown on the next page.
No
PDR
), the system may be repeatedly reset and released from the reset status. In this case, the time
Figure 20-3. Example of Software Processing After Reset Release (1/2)
Setting timer array unit
(to measure 50 ms)
50 ms has passed?
processing <1>
processing <2>
Clearing WDT
(TMIFn = 1?)
Initialization
Initialization
Reset
Yes
Power-on-clear
CHAPTER 20 POWER-ON-CLEAR CIRCUIT
DD
User’s Manual U19678EJ1V1UD
) fluctuates for a certain period in the vicinity of the POC detection
;
; f
; Initial setting for port.
Check the reset source, etc.
Setting of division ratio of system clock,
such as setting of timer or A/D converter.
Source: f
Timer starts (TSn = 1).
CLK
= Internal high-speed oscillation clock (8.4 MHz (MAX.)) (default)
where comparison value = 102: ≅ 50 ms
CLK
(8.4 MHz (MAX.))/2
Note 2
12
,
925
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