DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 732

• 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: -

Section 18 Flash Memory (0.18-µm F-ZTAT Version)
18.9
There are three types of protection against the flash memory programming/erasing: hardware
protection, software protection, and error protection.
18.9.1
Programming and erasure of the flash memory is forcibly disabled or suspended by hardware
protection. In this state, download of an on-chip program and initialization are possible. However,
programming or erasure of the user MAT cannot be performed even if the programming/erasing
program is initiated, and the error in programming/erasing is indicated by the FPFR parameter.
Table 18.12 Hardware Protection
Rev. 2.00 Jun. 28, 2007 Page 706 of 864
REJ09B0341-0200
Item
Reset protection
Protection
Hardware Protection
Description
•
•
registers are initialized in the reset
state (including a reset by the WDT)
and the programming/erasing
protection state is entered.
a reset using the RES pin unless the
RES pin is held low until oscillation has
settled after a power is initially
supplied. In the case of a reset during
operation, hold the RES pin low for the
RES pulse width given in the AC
characteristics. If a reset is input during
programming or erasure, data in the
flash memory is not guaranteed. In this
case, execute erasure and then
execute programming again.
The programming/erasing interface
The reset state will not be entered by
Download
O
Function to be Protected
Programming/
Erasing
O