UPD78F9222CS-CAC-A Renesas Electronics America, UPD78F9222CS-CAC-A Datasheet - Page 296

• Manufacturer Part Number: UPD78F9222CS-CAC-A
• Description: MCU 8BIT 4KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9222CS-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 4KB (4K 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: -

18.8.5 Example of shifting self programming mode to normal mode
programming.
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The operating mode must be returned from self programming mode to normal mode after performing self
An example of shifting to normal mode is explained below.
<1> Clear FLCMD (FLCMD = 00H).
<2> Clear the flash status register (PFS).
<3> Set normal mode using a specific sequence.
<4> Check the execution result of the specific sequence using bit 0 (FPRERR) of PFS
<5> Enable interrupt servicing (by executing the EI instruction and changing MK0 and MK1) to restore the original
<6> Mode shift is completed
Note Restore the CPU clock to its setting before self programming, after normal execution of the specific
Caution Be sure to perform the series of operations described above using the user program at an
Abnormal
state.
sequence.
Write the specific value (A5H) to PFCMD.
Write 00H to FLPMC (writing in this step is invalid)
Write 0FFH (inverted value of 00H) to FLPMC (writing in this step is invalid)
Write 00H to FLPMC (writing in this step is valid)
address where data is not erased or written.
<2>, normal
<5>
CHAPTER 18 FLASH MEMORY
User’s Manual U16898EJ6V0UD
Note
.