UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 486

• Manufacturer Part Number: UPD78F0550MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0550MA-FAA-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 10MHz
• Number Of I /o: 12
• Core Processor: 78K/0
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Program Memory Size: 4KB (4K x 8)
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Peripherals: LVD, POR, PWM, WDT
• Connectivity: I²C, LIN, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

486
(Communication reservation)
Notes 1. The wait time is calculated as follows.
Remark STT0:
2. The communication reservation operation executes a write to the IICA shift register (IICA) when a
MSTS0: Bit 7 of IICA status register 0 (IICAS0)
IICA:
IICWL: IICA low-level width setting register
IICWH: IICA high-level width setting register
t
f
(IICWL setting value + IICWH setting value + 4) + t
stop condition interrupt request occurs.
F
PRS
:
:
Bit 1 of IICA control register 0 (IICACTL0)
IICA shift register
SDAA0 and SCLA0 signal falling times
(refer to CHAPTER 28 ELECTRICAL SPECIFICATIONS (TARGET VALUES))
Peripheral hardware clock frequency
Figure 15-29. Communication Reservation Protocol
Note 2
Yes
Cancel communication
reservation
Define communication
reservation
CHAPTER 15 SERIAL INTERFACE IICA
MOV IICA, #
Preliminary User’s Manual U19111EJ2V1UD
MSTS0 = 0?
SET1 STT0
Wait
DI
EI
(Generate start condition)
No
H
Sets STT0 flag (communication reservation)
Defines that communication reservation is in effect
(defines and sets user flag to any part of RAM)
Secures wait time
Confirmation of communication reservation
Clear user flag
IICA write operation
F
2
f
PRS
(clocks)
Note 1
by software.