UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 351
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
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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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SUBCUD
(13) Watch error correction register (SUBCUD)
Symbol
Remark If a correctable range is −63.1 ppm or lower and 63.1 ppm or higher, set 0 to DEV.
This register is used to correct the watch with high accuracy when it is slow or fast by changing the value that
overflows from the sub-count register (RSUBC) to the second count register (reference value: 7FFFH).
SUBCUD can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
The range of value that can be corrected by using the watch error correction register (SUBCUD) is shown
below.
When (F6, F5, F4, F3, F2, F1, F0) = (*, 0, 0, 0, 0, 0, *), the watch error is not corrected. * is 0 or 1.
/F5 to /F0 are the inverted values of the corresponding bits (000011 when 111100).
Range of correction value: (when F6 = 0) 2, 4, 6, 8, … , 120, 122, 124
Correctable range
Maximum excludes
quantization error
Minimum resolution
DEV
DEV
F6
After reset: 00H
7
0
1
0
1
Figure 10-14. Format of Watch Error Correction Register (SUBCUD)
Corrects watch error when the second digits are at 00, 20, or 40 (every 20 seconds).
Corrects watch error only when the second digits are at 00 (every 60 seconds).
Increases by {(F5, F4, F3, F2, F1, F0) – 1}
Decreases by {(/F5, /F4, /F3, /F2, /F1, /F0) + 1}
F6
6
R/W
–189.2 ppm to 189.2 ppm
1.53 ppm
3.05 ppm
DEV = 0 (correction every 20 seconds)
(when F6 = 1) –2, –4, –6, –8, … , –120, –122, –124
CHAPTER 10 REAL-TIME COUNTER
Preliminary User’s Manual U19111EJ2V1UD
F5
5
Setting of watch error correction timing
Setting of watch error correction value
F4
4
2.
F3
2.
3
–63.1 ppm to 63.1 ppm
0.51 ppm
1.02 ppm
DEV = 1 (correction every 60 seconds)
F2
2
F1
1
F0
0
351
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