UPD78F1146AF1-BA4-A Renesas Electronics America, UPD78F1146AF1-BA4-A Datasheet - Page 496

• Manufacturer Part Number: UPD78F1146AF1-BA4-A
• Description: MCU 16BIT 78K0R/KX3 64-FBGA
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1146AF1-BA4-A

• 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: -

12.5.4 Transfer clock setting method
494
(1) Selection clock setting method on the master side
(2) Selection clock setting method on the slave side
The selection clock is set using a combination of bits 3, 1, and 0 (SMC0, CL01, and CL00) of IIC clock select
register 0 (IICCL0) and bit 0 (CLX0) of IIC function expansion register 0 (IICX0).
The I
For example, the I
is calculated using following expression.
To use as slave, set the bits 3, 1, and 0 (SMC0, CL01, CL00) of the IIC clock selection register (IICL0) and the
bit 0 (CLX0) of the IIC function expansion register 0 (IICX0) according to the f
Range) and IIC Operation Mode (Normal or Fast ) as defined in Table 12-3. Selection Clock Setting.
2
f
f
C transfer clock frequency (f
SCL
SCL
m = 24, 44, 48, 88, 96, 172, 344 (see Table 12-3 Selection Clock Setting)
T: 1/f
t
t
= 1/(m × T + t
R
F
= 1/(88 × 238.7 ns + 200 ns + 50 ns) ≅ 47.0 kHz
: SCL0 fall time
: SCL0 rise time
SCL0
CLK
SCL0
2
C transfer clock frequency (f
inversion
R
+ t
t
R
F
)
CHAPTER 12 SERIAL INTERFACE IIC0
SCL
) is calculated using the following expression.
m/2 × T
User’s Manual U17854EJ9V0UD
m × T + t
SCL0
SCL
) when f
inversion
R
+ t
F
t
F
CLK
= 4.19 MHz, m = 88, t
m/2 × T
SCL0
inversion
CLK
(Selectable Selection Clock
R
= 200 ns, and t
F
= 50 ns