HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 580

• Manufacturer Part Number: HD64F2638F20J
• Description: IC H8S MCU FLASH 256K 128-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2600r

Specifications of HD64F2638F20J

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SmartCard
• Peripherals: Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 14 Smart Card Interface
14.3.5
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 BRR and the CKS1,
CKS0, BCP1 and BCP0 bits in SMR. The formula for calculating the bit rate is as shown below.
Table 14-5 shows some sample bit rates.
If clock output is selected by setting CKE0 to 1, a clock is output from the SCK pin. The clock
frequency is determined by the bit rate and the setting of bits BCP1 and BCP0.
B =
Where: N = Value set in BRR (0 ≤ N ≤ 255)
Table 14-4 Correspondence between n and CKS1, CKS0
n
0
1
2
3
Table 14-5 Examples of Bit Rate B (bit/s) for Various BRR Settings
N
0
1
2
Note: Bit rates are rounded to the nearest whole number.
Page 530 of 1458
S × 2
B = Bit rate (bit/s)
φ = Operating frequency (MHz)
n = See table 14-4
S = Number of internal clocks in 1-bit period, set by BCP1 and BCP0
Clock
2n+1
(When n = 0 and S = 372)
10.00
13441
6720
4480
CKS1
0
1
φ
× (N + 1)
10.714
14400
7200
4800
× 10
CKS0
0
1
0
1
6
13.00
17473
8737
5824
14.285
19200
9600
6400
φ (MHz)
16.00
21505
10753
7168
H8S/2639, H8S/2638, H8S/2636,
18.00
24194
12097
8065
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
20.00
26882
13441
8961
May 28, 2010