UPD78F9222MC-5A4-A Renesas Electronics America, UPD78F9222MC-5A4-A Datasheet - Page 220
UPD78F9222MC-5A4-A
Manufacturer Part Number
UPD78F9222MC-5A4-A
Description
MCU 8BIT 4KB FLASH 20PIN
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9221MC-5A4-A.pdf
(418 pages)
Specifications of UPD78F9222MC-5A4-A
Core Processor
78K0S
Core Size
8-Bit
Speed
10MHz
Connectivity
LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
15
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 4x10b
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:
UPD78F9222MC-5A4-A
Manufacturer:
FSC
Quantity:
340
Part Number:
UPD78F9222MC-5A4-A
Manufacturer:
NEC
Quantity:
20 000
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Therefore, the maximum receivable baud rate at the transmission source is as follows.
Similarly, the maximum permissible data frame length can be calculated as follows.
Therefore, the minimum receivable baud rate at the transmission source is as follows.
The permissible baud rate error between UART6 and the transmission source can be calculated from the above
minimum and maximum baud rate expressions, as follows.
Remarks 1. The permissible error of reception depends on the number of bits in one frame, input clock
10
11
8
20
50
100
255
Minimum permissible data frame length: FLmin = 11
Division Ratio (k)
FLmax = 11
FLmax =
BRmax = (FLmin/11)
BRmin = (FLmax/11)
2. k: Set value of BRGC6
frequency, and division ratio (k). The higher the input clock frequency and the higher the division
ratio (k), the higher the permissible error.
21k – 2
20k
FL
Table 11-5. Maximum/Minimum Permissible Baud Rate Error
FL
k + 2
2
Maximum Permissible Baud Rate Error
k
11
1
1
CHAPTER 11 SERIAL INTERFACE UART6
=
=
FL =
21k + 2
21k
22k
20k
21k
+3.53%
+4.26%
+4.56%
+4.66%
+4.72%
2
User’s Manual U16898EJ6V0UD
2
Brate
Brate
k
2
FL
FL
k
2k
2
Minimum Permissible Baud Rate Error
FL =
21k + 2
2k
3.61%
4.31%
4.58%
4.67%
4.73%
FL
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