UPD78F1144AGB-GAH-AX Renesas Electronics America, UPD78F1144AGB-GAH-AX Datasheet - Page 450

• Manufacturer Part Number: UPD78F1144AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1144AGB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 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: -

448
(3) Permissible baud rate range for reception
Permissible maximum
The permissible baud rate range for reception during UART (UART0, UART1, UART3) communication can be
calculated by the following expression. Make sure that the baud rate at the transmission side is within the
permissible baud rate range at the reception side.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 1, 3)
Permissible minimum
As shown in Figure 11-90, the timing of latching receive data is determined by the division ratio set by bits 15
to 9 of the serial data register mn (SDRmn) after the start bit is detected. If the last data (stop bit) is received
before this latch timing, the data can be correctly received.
(Minimum receivable baud rate) =
(Maximum receivable baud rate) =
Brate: Calculated baud rate value at the reception side (See 11.6.5 (1) Baud rate calculation expression.)
k:
Nfr:
Data frame length
Figure 11-90. Permissible Baud Rate Range for Reception (1 Data Frame Length = 11 Bits)
data frame length
data frame length
SDRmn[15:9] + 1
1 data frame length [bits]
= (Start bit) + (Data length) + (Parity bit) + (Stop bit)
of SAU
timing
Latch
Start
Start
bit
Start
bit
bit
CHAPTER 11 SERIAL ARRAY UNIT
User’s Manual U17854EJ9V0UD
Bit 0
Bit 0
2 × k × Nfr − k + 2
2 × k × Nfr − k − 2
2 × k × (Nfr − 1)
FL
Bit 0
2 × k × Nfr
Bit 1
Bit 1
Bit 1
1 data frame (11 × FL)
(11 × FL) min.
(11 × FL) max.
× Brate
× Brate
Bit 7
Bit 7
Bit 7
Parity
bit
Parity
bit
Parity
bit
Stop
bit
Stop
bit
Stop
bit