DF2170VTE33 Renesas Electronics America, DF2170VTE33 Datasheet - Page 334

• Manufacturer Part Number: DF2170VTE33
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2170VTE33

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: HD64F2170VTE33; HD64F2170VTE33

11.3.8
BRR is an 8-bit register that adjusts the bit rate. As the SCI performs baud rate generator control
independently for each channel, different bit rates can be set for each channel. Table 11.2 shows
the relationships between the N setting in BRR and bit rate B for asynchronous mode. The initial
value of BRR is H'FF, and it can be read or written to by the CPU at all times.
Table 11.2 Relationships between N Setting in BRR and Bit Rate B
Note: B: Bit rate (bit/s)
Table 11.3 shows sample N settings in BRR in asynchronous mode. Table 11.4 shows the
maximum bit rate for each frequency in asynchronous mode.
Rev. 2.00, 03/04, page 300 of 534
Mode
Asynchronous
Mode
CKS1
0
0
1
1
N: BRR setting for baud rate generator (0 ≤ N ≤ 255)
φ: Operating frequency (MHz)
n: Determined by the SMR settings shown in the following tables.
SMR Setting
Bit Rate Register (BRR)
CKS0
0
1
0
1
Bit Rate
B =
64
2
φ
2n−1
n
0
1
2
3
10
6
(N + 1)
Error
Error (%) = {
B
64
φ
2
2n−1
10
6
(N + 1)
− 1 }
100