UPD70F3786GJ-GAE-AX Renesas Electronics America, UPD70F3786GJ-GAE-AX Datasheet - Page 781

• Manufacturer Part Number: UPD70F3786GJ-GAE-AX
• Description: MCU 32BIT V850ES/JX3-E 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Er

Specifications of UPD70F3786GJ-GAE-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, CSI, EBI/EMI, Ethernet, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 100
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 124K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(4) Allowable baud rate range during reception
Maximum allowable
Minimum allowable
The degree to which a discrepancy from the transmission destination’s baud rate is allowed during reception
is shown below.
Caution The equations described below should be used to set the baud rate error during reception
As shown in Figure 16-11, after the start bit is detected, the receive data latch timing is determined according
to the counter that was set by the UBnCTL2 register. If all data up to the final data (stop bit) is in time for this
latch timing, the data can be received normally.
Applying this to 11-bit reception is, theoretically, as follows.
Remark
FL = (Brate)
Minimum allowable value:
Brate: UARTBn baud rate
k:
FL:
Latch timing margin: 2 clocks
UARTBn
so that it always is within the allowable error range.
n = 0, 1
CHAPTER 16 ASYNCHRONOUS SERIAL INTERFACE B WITH FIFO (UARTBn)
value
value
UBnCTL2 set value
1-bit data length
−
1
Figure 16-11. Allowable Baud Rate Range During Reception
Latch timing
Start bit
Start bit
Start bit
FLmin
Bit 0
User’s Manual U19601EJ2V0UD
Bit 0
=
Bit 0
FL
11
×
FL
Bit 1
−
Bit 1
Bit 1
k
1 data frame (11 × FL)
2
−
k
FLmin
2
FLmax
×
FL
Bit 7
=
Bit 7
Bit 7
21
Parity bit
k
2
Parity bit
k
+
2
Parity bit
FL
Stop bit
Stop bit
Stop bit
779