M306N5FCTFP#U0 Renesas Electronics America, M306N5FCTFP#U0 Datasheet - Page 271
M306N5FCTFP#U0
Manufacturer Part Number
M306N5FCTFP#U0
Description
IC M16C/6N MCU FLASH 128K 100QFP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/6Nr
Specifications of M306N5FCTFP#U0
Core Processor
M16C/60
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, I²C, IEBus, SIO, UART/USART
Peripherals
DMA, WDT
Number Of I /o
87
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 26x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-QFP
For Use With
R0K3306NKS001BE - KIT DEV RSK RSK-M16C/6NKR0K3306NKS000BE - KIT DEV RSK RSK-M16C/6NK
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M306N5FCTFP#U0M306N5FCTFP#UK
Manufacturer:
Renesas Electronics America
Quantity:
135
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M16C/6N Group (M16C/6N5)
Rev.2.40
REJ09B0011-0240
21.2 Functions to Prevent Flash Memory from Rewriting
The flash memory has the ROM code protect function for parallel I/O mode and the ID code check function
for standard serial I/O mode and CAN I/O mode to prevent the flash memory from reading or rewriting.
21.2.1 ROM Code Protect Function
21.2.2 ID Code Check Function
The ROM code protect function inhibits the flash memory from being read or rewritten during parallel I/O
mode. Figure 21.2 shows the ROMCP Register. The ROMCP register is located in the user ROM area.
The ROM code protect function is enabled when the ROMCR bits are set to other than 11b. In this case,
set the bit 5 to bit 0 to 111111b.
When exiting ROM code protect, erase the block including the ROMCP register by CPU rewrite mode,
standard serial I/O mode, or CAN I/O mode.
Use the ID code check function in standard serial I/O mode and CAN I/O mode. The ID code sent from the
serial programmer is compared with the ID code written in the flash memory for a match. If the ID codes
do not match, commands sent from the serial programmer are not accepted. However, if the four bytes of
the reset vector are FFFFFFFFh, ID codes are not compared, allowing all commands to be accepted.
The ID codes are 7-byte data stored consecutively, starting with the first byte, into addresses 0FFFDFh,
0FFFE3h, 0FFFEBh, 0FFFEFh, 0FFFF3h, 0FFFF7h, and 0FFFFBh. The flash memory must have a
program with the ID codes set in these addresses.
Figure 21.3 shows the Addresses for ID Code Stored.
Apr 14, 2006
page 249 of 372
21. Flash Memory Version
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