UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 445

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

17.5.13 Wakeup function
and extension code have been received.
addresses do not match.
addresses are transmitted due to the possibility that an arbitration loss may change the master device (which has
generated a start condition) to a slave device.
wakeup function, and this determines whether interrupt requests are enabled or disabled.
During address transmission
Read/write data after address transmission
During extension code transmission
Read/write data after extension code transmission
During data transmission
During ACK transfer period after data transmission
When restart condition is detected during data transfer
When stop condition is detected during data transfer
When data is at low level while attempting to generate a restart
condition
When stop condition is detected while attempting to generate a
restart condition
When data is at low level while attempting to generate a stop
condition
When SCL0 is at low level while attempting to generate a
restart condition
Notes 1. When WTIM0 (bit 3 of IIC control register 0 (IICC0)) = 1, an interrupt request occurs at the falling edge
Remark
The I
This function makes processing more efficient by preventing unnecessary INTIIC0 signal from occurring when
When a start condition is detected, wakeup standby mode is set. This wakeup standby mode is in effect while
However, when a stop condition is detected, bit 4 (SPIE0) of IIC control register 0 (IICC0) is set regardless of the
2
C bus slave function is a function that generates an interrupt request signal (INTIIC0) when a local address
2. When there is a chance that arbitration will occur, set SPIE0 = 1 for master device operation.
of the ninth clock. When WTIM0 = 0 and the extension code’s slave address is received, an interrupt
request occurs at the falling edge of the eighth clock.
SPIE0: Bit 4 of IIC control register 0 (IICC0)
Table 17-5. Status During Arbitration and Interrupt Request Generation Timing
Status During Arbitration
CHAPTER 17 SERIAL INTERFACE IIC0
User’s Manual U17260EJ6V0UD
At falling edge of eighth or ninth clock following byte transfer
When stop condition is generated (when SPIE0 = 1)
At falling edge of eighth or ninth clock following byte transfer
When stop condition is generated (when SPIE0 = 1)
At falling edge of eighth or ninth clock following byte transfer
Interrupt Request Generation Timing
Note 2
Note 2
Note 1
Note 1
Note 1
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