HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 706

• 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 16 Controller Area Network (HCAN)
HCAN bit rate calculation:
BCR Setting Constraints
These constraints allow the setting range shown in table 16-4 for TSEG1 and TSEG2 in BCR.
Page 656 of 1458
1-bit time
Legend:
SYNC_SEG: Segment for establishing synchronization of nodes on the CAN bus (Normal bit
PRSEG:
PHSEG1:
PHSEG2:
Note: * The time quanta values of TSEG1 and TSEG2 become the value of TSEG + 1.
Bit rate =
f
Note: The BCR values are used for BRP, TSEG1, and TSEG2.
TSEG1 > TSEG2 ≥ SJW
CLK
Item
f
BRP
TSEG1
TSEG2
CLK
SYNC_SEG
: peripheral clock (φ)
1
edge transitions occur in this segment).
Segment for compensating for physical delay between networks.
Buffer segment for correcting phase drift (positive). (This segment is extended
when synchronization (resynchronization) is established).
Buffer segment for correcting phase drift (negative). (This segment is
shortened when synchronization (resynchronization) is established).
2 × (BRP + 1) × (3 + TSEG1 + TSEG2)
Figure 16-6 Detailed Description of One Bit
Set Values
20 MHz
0 (B'000000)
4 (B'0100)
3 (B'011)
1-bit time (8 to 25 time quanta)
PRSEG
(SJW = 0 to 3)
f
CLK
Time segment 1
(TSEG1)*
4 to16
PHSEG1
Actual Values
—
System clock × 2
5TQ
4TQ
Time segment 2
(TSEG2)*
PHSEG2
H8S/2639, H8S/2638, H8S/2636,
2 to 8
REJ09B0103-0800 Rev. 8.00
H8S/2630, H8S/2635 Group
Quantum
May 28, 2010