M30845FHGP#U3 Renesas Electronics America, M30845FHGP#U3 Datasheet - Page 129
M30845FHGP#U3
Manufacturer Part Number
M30845FHGP#U3
Description
IC M32C MCU FLASH 384K 144LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M32C/80r
Specifications of M30845FHGP#U3
Core Processor
M32C/80
Core Size
16/32-Bit
Speed
32MHz
Connectivity
CAN, I²C, IEBus, SIO, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
121
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 34x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
For Use With
R0K330879S001BE - KIT DEV RSK M32C/87R0K330879S000BE - KIT DEV RSK M32C/87
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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M
R
R
10. Protection
e
E
3
. v
J
2
Figure 10.1 PRCR Register
0
C
The protection function protects important registers from being easily overwritten when a program runs out of
control.
Figure 10.1 shows the PRCR register. Each bit in the PRCR register protects the following registers:
The PRC2 bit is set to "0" (write disable) when data is written to a desired address after setting the PRC2 bit
to "1" (write enable). Set the PD9 and PS3 registers immediately after setting the PRC2 bit in the PRCR
register to "1" (write enable). Do not generate an interrupt or a DMA transfer between the instruction to set
to the PRC2 bit to "1" and the following instruction. The PRC0, PRC1 and PRC3 bits are not set to "0" even
if data is written to desired addresses. Set the PRC0, PRC1 and PRC3 bits to "0" by program.
1
9
0 .
8 /
B
• The PRC0 bit protects the CM0, CM1, CM2, MCD, PLC0 and PLC1 registers;
• The PRC1 bit protects the PM0, PM1, PM2, INVC0 and INVC1 registers;
• The PRC2 bit protects the PD9 and PS3 registers;
• The PRC3 bit protects the VCR2 and D4INT registers.
0
1
4
0
3
G
J
6
u
o r
0 -
. l
Protect Register
b7
u
NOTES:
0
1
p
, 7
0
b6
1
1. The PRC2 bit is set to "0" by writing into a desired address after the PRC2 bit is set to "1".
(
2
M
The PRC0, PRC1 and PRC3 bits are not automatically set to "0". Set them to "0" by program.
0
b5
3
0
5
2
b4
C
8 /
Page 106
b3
, 4
b2
M
3
b1
2
C
b0
f o
8 /
4
4
(b7 - b4)
Symbol
) T
PRC0
PRC1
PRC2
PRC3
9
5
Bit
Symbol
PRCR
Protect Bit 0
Protect Bit 1
Protect Bit 2
Protect Bit 3
Nothing is assigned. When write, set to "0".
When read, its content is indeterminate.
Bit Name
Address
000A
(1)
16
Enables writing to VCR2, D4INT
registers
0 : Write disable
1 : Write enable
Enables writing to CM0, CM1, CM2,
MCD, PLC0, PLC1 registers
0 : Write disable
1 : Write enable
Enables writing to PM0, PM1, PM2,
INVC0, INVC1 registers
0 : Write disable
1 : Write enable
Enables writing to PD9, PS3 registers
0 : Write disable
1 : Write enable
After Reset
XXXX 0000
Function
2
RW
RW
RW
RW
RW
10. Protection
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