UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 301
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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<R>
19.8.6 Example of block erase operation in self programming mode
An example of the block erase operation in self programming mode is explained below.
<1> Set 03H (block erase) to the flash program command register (FLCMD).
<2> Set the block number to be erased, to flash address pointer H (FLAPH).
<3> Set flash address pointer L (FLAPL) to 00H.
<4> Write the same value as FLAPH to the flash address pointer H compare register (FLAPHC).
<5> Set the flash address pointer L compare register (FLAPLC) to 00H.
<6> Clear the flash status register (PFS).
<7> Write ACH to the watchdog timer enable register (WDTE) (clear and restart the watchdog timer counter)
<8> Execute the HALT instruction then start self programming. (Execute an instruction immediately after the
<9> Check if a self programming error has occurred using bit 1 (VCERR) and bit 2 (WEPRERR) of PFS
<10> If the number of times the erase command can be executed has not been exceeded, return to step <6> and
<11> Block erase processing is abnormally terminated.
<12> Block erase processing is normally terminated.
Notes 1. This setting is not required when the watchdog timer is not used.
HALT instruction if self programming has been executed.)
Abnormal
Normal
re-execute the command. If the number of times the erase command can be executed has been exceeded,
block erasure ends abnormally.
2. Separately check the WEPRERR bit to check for errors in executing the erase command on a write-
prohibited area.
<10>
<12>
CHAPTER 19 FLASH MEMORY
User’s Manual U17446EJ5V0UD
Note 2
.
Note 1
299
.
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