UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 307
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
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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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19.8.8 Example of byte write operation in self programming mode
An example of the byte write operation in self programming mode is explained below.
<1> Set 05H (byte write) to the flash program command register (FLCMD).
<2> Set the number of block to which data is to be written, to flash address pointer H (FLAPH).
<3> Set the address at which data is to be written, to flash address pointer L (FLAPL).
<4> Set the data to be written, to the flash write buffer register (FLW).
<5> Clear the flash status register (PFS).
<6> Write ACH to the watchdog timer enable register (WDTE) (clear and restart the watchdog timer counter)
<8> Check if a self programming error has occurred using bit 1 (VCERR) and bit 2 (WEPRERR) of PFS.
<9> Byte write processing is abnormally terminated.
<10> Byte write processing is normally terminated.
Note This setting is not required when the watchdog timer is not used.
Caution If a write results in failure, erase the block once and write to it again.
<7> Execute the HALT instruction then start self programming. (Execute an instruction immediately after the
Abnormal
Normal
HALT instruction if self programming has been executed.)
<9>
<10>
CHAPTER 19 FLASH MEMORY
User’s Manual U17446EJ5V0UD
Note
305
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