DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 191

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K 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: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(3)
(a)
The number of access cycles in the basic bus interface can be specified as two or three cycles by
the ASTCR. An area specified as 2-state access is specified as 2-state access space; an area
specified as 3-state access is specified as 3-state access space.
For the 2-state access space, a wait cycle insertion is disabled. For the 3-state access space, a
program wait (0 to 7 cycles) specified by WTCRA and WTCRB or an external wait by WAIT can
be inserted.
Assertion period of the chip select signal can be extended by CSACR.
(b) Byte Control SRAM Interface
The number of access cycles in the byte control SRAM interface is the same as that in the basic
bus interface.
(c)
The number of access cycles at full access in the burst ROM interface is the same as that in the
basic bus interface. The number of access cycles in the burst access can be specified as one to
eight cycles by the BSTS bit in BROMCR.
Number of Access Cycles:
Basic Bus Interface
Burst ROM Interface
Number of access cycles in the basic bus interface
= number of basic cycles (2, 3) + number of program wait cycles (0 to 7)
Number of access cycles in byte control SRAM interface
= number of basic cycles (2, 3) + number of program wait cycles (0 to 7)
Number of access cycles in the burst ROM interface
= number of basic cycles (2, 3) + number of program wait cycles (0 to 7)
+ number of CS extension cycles (0, 1, 2)
[+ number of external wait cycles by the WAIT pin]
+ number of CS extension cycles (0, 1, 2)
[+ number of external wait cycles by the WAIT pin]
+ number of CS extension cycles (0, 1)
[+number of external wait cycles by the WAIT pin]
+ number of burst access cycles (1 to 8) × number of burst accesses (0 to 63)
Rev. 2.00 Jun. 28, 2007 Page 165 of 864
Section 6 Bus Controller (BSC)
REJ09B0341-0200