DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 492

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148ATE20; HD64F2148ATE20

Section 15 Serial Communication Interface (SCI, IrDA)
The BRR setting is found from the following equations.
Asynchronous mode:
Synchronous mode:
Where B: Bit rate (bits/s)
The bit rate error in asynchronous mode is found from the following equation:
Rev. 4.00 Sep 27, 2006 page 446 of 1130
REJ09B0327-0400
N: BRR setting for baud rate generator (0
n: Baud rate generator input clock (n = 0 to 3)
n
0
1
2
3
N =
N =
Error (%) =
: Operating frequency (MHz)
(See the table below for the relation between n and the clock.)
64
8
2
2
2n–1
Clock
2n–1
/4
/16
/64
(N + 1)
B
B
10
10
B
CKS1
0
0
1
1
6
6
– 1
– 1
10
64
6
SMR Setting
2
2n–1
CKS0
0
1
0
1
– 1
100
N 255)