D12312SVTE25 Renesas Electronics America, D12312SVTE25 Datasheet - Page 550

• Manufacturer Part Number: D12312SVTE25
• Description: MCU 3V 0K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12312SVTE25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 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: -
• Program Memory Size: -
• Other names: HD6412312SVTE25; HD6412312SVTE25

Section 13 Smart Card Interface
The method of calculating the value to be set in the bit rate register (BRR) from the operating
frequency and bit rate, on the other hand, is shown below. N is an integer, 0 ≤ N ≤ 255, and the
smaller error is specified.
Table 13.6 Examples of BRR Settings for Bit Rate B (bits/s) (When n = 0 and S = 372)
Bits/s
9600
Table 13.7 Maximum Bit Rate at Various Frequencies (Smart Card Interface Mode)
φ (MHz)
7.1424
10.00
10.7136
13.00
14.2848
16.00
18.00
20.00
25.00
The bit rate error is given by the following formula:
Rev.7.00 Feb. 14, 2007 page 516 of 1108
REJ09B0089-0700
N
0
N =
Error (%) = (
7.1424
Error N
0.00
(When S = 372)
S × 2
1
10.00
2n+1
φ
Error N
30
S × 2
Maximum Bit Rate (bits/s)
9600
13441
14400
17473
19200
21505
24194
26882
33602
× B
1
2n+1
10.7136
× 10
Error N
25
× B × (N + 1)
φ
6
– 1
1
13.00
Error N
8.99
× 10
1
φ (MHz)
14.2848
Error N
0.00
6
– 1) × 100
1
16.00
N
0
0
0
0
0
0
0
0
0
Error N
12.01 2
18.00
Error N
15.99 2
n
0
0
0
0
0
0
0
0
0
20.00
Error N
6.60
3
25.00
Error
12.49