M30260F6AGP#U3 Renesas Electronics America, M30260F6AGP#U3 Datasheet - Page 254

• Manufacturer Part Number: M30260F6AGP#U3
• Description: IC M16C MCU FLASH 48K 48LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/Tiny/26r

Specifications of M30260F6AGP#U3

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, PWM, Voltage Detect, WDT
• Number Of I /o: 39
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R
R
M
17.3 Functions To Prevent Flash Memory from Rewriting
e
E
1
. v
J
6
0
C
The flash memory has a built-in ROM code protect function for parallel I/O mode and a built-in ID code
check function for standard input/output mode to prevent the flash memory from reading or rewriting.
17.3.1 ROM Code Protect Function
17.3.2 ID Code Check Function
2
9
0 .
B
2 /
The ROM code protect function disables reading or changing the contents of the on-chip flash memory in
parallel I/O mode. Figure 17.3.1.1 shows the ROMCP address. The ROMCP address is located in a user
ROM area.
To enable ROM code protect, set the ROMCP1 bit to “00
“111111
To cancel ROM code protect, erase the block including the the ROMCP address in CPU rewrite mode or
standard serial I/O mode.
Use the ID code check function in standard serial input/output mode. Unless the flash memory is blank,
the ID codes sent from the programmer and the seven bytes ID codes written in the flash memory are
compared to see if they match. If the ID codes do not match, the commands sent from the programmer
are not acknowledged. The ID code consists of 8-bit data, starting with the first byte, into addresses,
0FFFDF
has a program with the ID code set in these addresses.
0
0
6
2
A
0
F
2
e
G
0 -
b
o r
1 .
2
2
0
16
, 5
u
”.
0
p
, 0FFFE3
2
(
0
M
0
7
1
6
C
page 235
2 /
16
6
, A
, 0FFFEB
M
1
f o
6
C
3
2
2 /
16
9
6
, 0FFFEF
, B
M
1
6
C
2 /
16
6
, 0FFFF3
) T
16
, 0FFFF7
2
”, “01
2
”, or “10
16
, and 0FFFFB
2
” and set the bit 5 to bit 0 to
17. Flash Memory Version
16
. The flash memory