UPD78F1233GB-GAH-AX Renesas Electronics America, UPD78F1233GB-GAH-AX Datasheet - Page 795

• Manufacturer Part Number: UPD78F1233GB-GAH-AX
• Description: MCU 16BIT 78K0R/LX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Ix3r

Specifications of UPD78F1233GB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

14.5.13 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.
the wakeup function, and this determines whether interrupt requests are enabled or disabled.
operation clock. An interrupt request signal (INTIICA) is also generated when a local address and extension code
have been received. Operation returns to normal operation by using an instruction to clear (0) the WUP bit after this
interrupt has been generated.
address match.
The I
This function makes processing more efficient by preventing unnecessary INTIICA 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 (SPIE) of IICA control register 0 (IICCTL0) is set regardless of
To use the wakeup function in the STOP mode, set WUP to 1. Addresses can be received regardless of the
Figure 14-22 shows the flow for setting WUP = 1 and Figure 14-23 shows the flow for setting WUP = 0 upon an
2
C bus slave function is a function that generates an interrupt request signal (INTIICA) when a local address
Figure 14-22. Flow When Setting WUP = 1
CHAPTER 14 SERIAL INTERFACE IICA
MSTS = STD = EXC = COI =0?
STOP instruction execution
User’s Manual U19678EJ1V1UD
WUP = 1
START
Wait
Yes
Waits for 3 clocks.
No
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