UPD78F1146AGB-GAH-AX Renesas Electronics America, UPD78F1146AGB-GAH-AX Datasheet - Page 509

• Manufacturer Part Number: UPD78F1146AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1146AGB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

(Communication reservation)
Note The communication reservation operation executes a write to IIC shift register 0 (IIC0) when a stop
Remark
condition interrupt request occurs.
STT0:
MSTS0: Bit 7 of IIC status register 0 (IICS0)
IIC0:
Bit 1 of IIC control register 0 (IICC0)
IIC shift register 0
Yes
Note
Figure 12-23. Communication Reservation Protocol
Cancel communication
reservation
Define communication
reservation
CHAPTER 12 SERIAL INTERFACE IIC0
MOV IIC0, #××H
MSTS0 = 0?
SET1 STT0
Wait
DI
EI
User’s Manual U17854EJ9V0UD
(Generate start condition)
No
Sets STT0 flag (communication reservation)
Defines that communication reservation is in effect
(defines and sets user flag to any part of RAM)
Secures wait period set by software (see Table 12-7).
Confirmation of communication reservation
Clear user flag
IIC0 write operation
507