DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 538

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 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: Lead free / RoHS Compliant
• Eeprom Size: -

Section 14 Smart Card Interface
14.3.5
As its serial communication clock, the smart card interface can use only the internal clock
generated by the on-chip baud rate generator. The bit rate can be selected by setting the bit rate
register (BRR) and bits CKS1 and CKS0 in the serial mode register (SMR). The bit rate can be
calculated from the equation given below. Table 14.5 lists some examples of bit rate settings.
If bit CKE0 is set to 1, a clock signal with a frequency equal to 372 times the bit rate is output
from the SCK
where, N: BRR setting (0
Table 14.4 n-Values of CKS1 and CKS0 Settings
n
0
1
2
3
Note: * If the gear function is used to divide the system clock frequency, use the divided
Table 14.5 Bit Rates (bits/s) for Different BRR Settings (when n = 0)
N
0
1
2
Note: Bit rates are rounded off to one decimal place.
Rev. 3.00 Mar 21, 2006 page 508 of 814
REJ09B0302-0300
frequency to calculate the bit rate. The equation above applies directly to 1/1 frequency
division.
B: Bit rate (bits/s)
n: See table 14.4
B =
: System clock frequency (MHz)*
Clock
7.1424
9600.0
4800.0
3200.0
1488
0
pin.
2
10.00
13440.9 14400.0 17473.1 19200.0 21505.4 24193.5 26881.7 33602.2
6720.4
4480.3
2n–1
CKS1
0
0
1
1
(N + 1)
N
10.7136 13.00
7200.0
4800.0
255)
10
6
8736.6
5824.4
CKS0
0
1
0
1
14.2848 16.00
9600.0
6400.0
(MHz)
10752.7 12096.8 13440.9 16801.1
7168.5
18.00
8064.5 8960.6 11200.7
20.00
25.00