UPD78F1174AGF-GAT-AX Renesas Electronics America, UPD78F1174AGF-GAT-AX Datasheet - Page 752

• Manufacturer Part Number: UPD78F1174AGF-GAT-AX
• Description: MCU 16BIT 78K0R/KX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1174AGF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, EBI/EMI, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

25.7 Security Settings
memory, so that the program cannot be changed by an unauthorized person.
when the programming mode is set next.
setting when the flash memory is shipped.
programming. Each security setting can be used in combination.
is enabled.
750
The 78K0R/KH3 supports a security function that prohibits rewriting the user program written to the internal flash
The operations shown below can be performed using the Security Set command. The security setting is valid
• Disabling batch erase (chip erase)
• Disabling block erase
• Disabling write
• Disabling rewriting boot cluster 0
The batch erase (chip erase), block erase, write commands, and rewriting boot cluster 0 are enabled by the default
All the security settings are cleared by executing the batch erase (chip erase) command.
Table 25-7 shows the relationship between the erase and write commands when the 78K0R/KH3 security function
Remark To prohibit writing and erasing during self-programming, use the flash sealed window function (see 25.9.2
Execution of the block erase and batch erase (chip erase) commands for entire blocks in the flash memory is
prohibited by this setting during on-board/off-board programming. Once execution of the batch erase (chip
erase) command is prohibited, all of the prohibition settings (including prohibition of batch erase (chip erase)) can
no longer be cancelled.
Caution After the security setting for the batch erase is set, erasure cannot be performed for the device.
Execution of the block erase command for a specific block in the flash memory is prohibited during on-board/off-
board programming. However, blocks can be erased by means of self programming.
Execution of the write and block erase commands for entire blocks in the flash memory is prohibited during on-
board/off-board programming. However, blocks can be written by means of self programming.
Execution of the write command, block erase command, and batch erase (chip erase) command for boot cluster
0 (00000H to 00FFFH) in the flash memory is prohibited by this setting.
for detail).
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.
CHAPTER 25 FLASH MEMORY
User’s Manual U18432EJ5V0UD
Security can be set by on-board/off-board programming and self