UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 361
UPD78F0550MA-FAA-AX
Manufacturer Part Number
UPD78F0550MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0550MA-FAA-AX.pdf
(734 pages)
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
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
Renesas
Quantity:
800
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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Example of correcting from 32772.3 Hz to 32768 Hz (32772.3 Hz
[Measuring the oscillation frequency]
outputting about 1 Hz from the RTC1HZ pin when the watch error correction register is set to its initial value (00H).
Note Refer to 10.4.4 1 Hz output of real-time counter for the setting procedure of outputting about 1 Hz from
[Calculating the correction value]
ppm is 63.1 ppm or less, so assume DEV to be 0.
[Calculating the values to be set to (F6 to F0)]
Correction example <1>
The oscillation frequency
(When the output frequency from the RTCCL pin is 32772.3 Hz)
If the target frequency is assumed to be 32768 Hz (32772.3 Hz
The expression for calculating the correction value when DEV is 0 is applied.
(When the correction value is 86)
If the correction value is 0 or more (when delaying), assume F6 to be 0.
Calculate (F5, F4, F3, F2, F1, F0) from the correction value.
Consequently, when correcting from 32772.3 Hz to 32768 Hz (32772.3 Hz
register such that DEV is 0 and the correction value is 86 (bits 6 to 0 of SUBCUD: 0101100) results in 32768 Hz
(0 ppm).
Figure 10-25 shows the operation when (DEV, F6, F5, F4, F3, F2, F1, F0) is (0, 0, 1, 0, 1, 1, 0, 0).
the RTC1HZ pin, and 10.4.5
outputting about 32 kHz from the RTCCL pin.
Correction value = Number of correction counts in 1 minute
{ (F5, F4, F3, F2, F1, F0)
(F5, F4, F3, F2, F1, F0)
(F5, F4, F3, F2, F1, F0)
Note
= (Oscillation frequency
= (32772.3
= 86
of each product is measured by outputting about 32 kHz from the RTCCL pin or
CHAPTER 10 REAL-TIME COUNTER
Preliminary User’s Manual U19111EJ2V1UD
1}
32.768 kHz output of real-time counter for the setting procedure of
32768
2
= 86
= 44
= (1, 0, 1, 1, 0, 0)
1)
Target frequency
32768
60
131.2 ppm)
131.2 ppm), the correction range for 131.2
3
3
1)
131.2 ppm), setting the correction
32768
60
3
361
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