UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 293
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UPD78F9234MC-5A4-A
Manufacturer Part Number
UPD78F9234MC-5A4-A
Description
MCU 8BIT 8KB FLASH 30PIN
Manufacturer
Renesas Electronics America
Series
78K0S/Kx1+r
Datasheet
1.UPD78F9232MC-5A4-A.pdf
(419 pages)
Specifications of UPD78F9234MC-5A4-A
Core Processor
78K0S
Core Size
8-Bit
Speed
10MHz
Connectivity
LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F9234MC-5A4-A
Manufacturer:
MAXIM
Quantity:
1 001
Part Number:
UPD78F9234MC-5A4-A
Manufacturer:
NEC
Quantity:
20 000
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(7) Flash write buffer register (FLW)
(8) Protect byte
This register is used to store the data to be written to the flash memory.
This register is set with a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears these registers to 00H.
This protect byte is used to specify the area that is to be protected from writing or erasing. The specified area
is valid only in the self programming mode. Because self programming of the protected area is invalid, the data
written to the protected area is guaranteed.
Address: 0081H
PRSELF4
PD78F9232
Address: FFA8H
Symbol
7
1
0
0
0
0
0
0
0
0
1
FLW
PRSELF3
PRSELF4
FLW7
7
1
1
1
1
1
1
1
1
1
6
Figure 19-16. Format of Flash Write Buffer Register (FLW)
After reset: 00H
Other than above
FLW6
PRSELF2
PRSELF3
Figure 19-17. Format of Protect Byte (1/2)
6
0
0
0
0
1
1
1
1
1
5
CHAPTER 19 FLASH MEMORY
FLW5
User’s Manual U17446EJ5V0UD
5
PRSELF2
PRSELF1
R/W
0
0
1
1
0
0
1
1
1
4
FLW4
4
PRSELF0
PRSELF1
0
1
0
1
0
1
0
1
1
3
FLW3
3
Blocks 15 to 0 are protected.
Blocks 13 to 0 are protected.
Blocks 14 and 15 can be written or erased.
Blocks 11 to 0 are protected.
Blocks 12 to 15 can be written or erased.
Blocks 9 to 0 are protected.
Blocks 10 to 15 can be written or erased.
Blocks 7 to 0 are protected.
Blocks 8 to 15 can be written or erased.
Blocks 5 to 0 are protected.
Blocks 6 to 15 can be written or erased.
Blocks 3 to 0 are protected.
Blocks 4 to 15 can be written or erased.
Blocks 1 and 0 are protected.
Blocks 2 to 15 can be written or erased.
All blocks can be written or erased.
Setting prohibited
PRSELF0
FLW2
2
2
FLW1
1
Status
1
1
FLW0
0
0
1
291
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