DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 741

• 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: -

(1)
The bit rate is calculated by measuring the period of transfer of a low-level byte (H'00) from the
host. The bit rate can be changed by the command for a new bit rate selection. After the bit rate
has been adjusted, the boot program enters the inquiry and selection state. The bit-rate-adjustment
sequence is shown in figure 18.24.
(2)
After adjustment of the bit rate, the protocol for serial communications between the host and the
boot program is as shown below.
1. One-byte commands and one-byte responses
2. n-byte commands or n-byte responses
3. Error response
4. Programming of 128 bytes
These one-byte commands and one-byte responses consist of the inquiries and the ACK for
successful completion.
These commands and responses are comprised of n bytes of data. These are selections and
responses to inquiries.
The program data size is not included under this heading because it is determined in another
command.
The error response is a response to inquiries. It consists of an error response and an error code
and comes two bytes.
The size is not specified in commands. The size of n is indicated in response to the
programming unit inquiry.
Bit-Rate-Adjustment State
Communications Protocol
Host
Figure 18.24 Bit-Rate-Adjustment Sequence
H'00 (completion of adjustment)
H'E6 (boot response)
H'00 (30 times maximum)
(H'FF (error))
H'55
Section 18 Flash Memory (0.18-µm F-ZTAT Version)
Rev. 2.00 Jun. 28, 2007 Page 715 of 864
Measuring the
Boot program
1-bit length
REJ09B0341-0200