DF3026X25V Renesas Electronics America, DF3026X25V Datasheet - Page 468

• Manufacturer Part Number: DF3026X25V
• Description: MCU 3V 256K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3026X25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 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: Lead free / RoHS Compliant
• Eeprom Size: -

Section 13 Smart Card Interface
13.3.5
Only an internal clock generated by the on-chip baud rate generator can be used as the
transmit/receive clock for the smart card interface. The bit rate is set with the bit rate register
(BRR) and the CKS1 and CKS0 bits in the serial mode register (SMR). The equation for
calculating the bit rate is shown below. Table 13.5 shows some sample bit rates.
If clock output is selected with CKE0 set to 1, a clock with a frequency of 372 times the bit rate is
output from the SCK pin.
where, N: BRR setting (0 N 255)
Table 13.4 n-Values of CKS1 and CKS0 Settings
n
0
1
2
3
Note: If the gear function is used to divide the clock frequency, use the divided frequency to
Table 13.5 Bit Rates (bits/s) for Various BRR Settings (When n = 0)
N
0
1
2
Note: Bit rates are rounded off to two decimal places.
Rev. 2.00 Sep 20, 2005 page 428 of 800
REJ09B0260-0200
calculate the bit rate. The equation above applies directly to 1/1 frequency division.
B =
B: Bit rate (bit/s)
n: See table 13.4
Clock
: Operating frequency (MHz)
7.1424
9600.0
4800.0
3200.0
1488
CKS1
0
1
2
10.00
13440.9
6720.4
4480.3
2n–1
(N + 1)
10.7136
14400.0
7200.0
4800.0
CKS0
0
1
0
1
10
6
13.00
17473.1
8736.6
5824.4
(MHz)
14.2848
19200.0
9600.0
6400.0
16.00
21505.4
10752.7
7168.5
18.00
24193.5
12096.8
8064.5
25.00
33602.2
16801.1
11200.7