UPD78F9212CS-CAB-A Renesas Electronics America, UPD78F9212CS-CAB-A Datasheet - Page 233

• Manufacturer Part Number: UPD78F9212CS-CAB-A
• Description: MCU 8BIT 4KB FLASH 16PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9212CS-CAB-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 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: -
• Connectivity: -

16.7.3 Security settings
memory is shipped. The above security settings are possible only for on-board/off-board programming. Each security
setting can be used in combination.
is enabled.
The operations shown below can be prohibited using the security setting command.
The batch erase (chip erase), block erase, and write commands are enabled by the default setting when the flash
Table 16-7 shows the relationship between the erase and write commands when the 78K0S/KY1+ security function
Batch erase (chip erase) is prohibited
Execution of the block erase and batch erase (chip erase) commands for entire blocks in the flash memory is
prohibited. Once execution of the batch erase (chip erase) command is prohibited, all the prohibition settings can
no longer be cancelled.
Caution After the security setting of the batch erase is set, erasure cannot be performed for the device.
Block erase is prohibited
Execution of the block erase command in the flash memory is prohibited. This prohibition setting can be
cancelled using the batch erase (chip erase) command.
Write is prohibited
Execution of the write and block erase commands for entire blocks in the flash memory is prohibited. This
prohibition setting can be cancelled using the batch erase (chip erase) command.
Remark
Note Since the erase command is disabled, data different from that which has already been written to the
Security
When batch erase (chip erase) security
operation is enabled
When block erase security operation is
enabled
When write security operation is enabled
Table 16-7. Relationship Between Commands When Security Function Is Enabled
In addition, even if a write command is executed, data different from that which has already
been written to the flash memory cannot be written because the erase command is disabled.
The security setting is valid when the programming mode is set next time.
flash memory cannot be written.
ACK
NAK
Command Name
Command
CHAPTER 16 FLASH MEMORY
Table 16-6. Response Name
User’s Manual U16994EJ6V0UD
Disabled
Enabled
Batch Erase (Chip
Erase) Command
Acknowledges command/data.
Acknowledges illegal command/data.
Disabled
Block Erase
Command
Function
Enabled
Enabled
Disabled
Write Command
Note
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