ML610Q429-NNNTBZ03A7 Rohm Semiconductor, ML610Q429-NNNTBZ03A7 Datasheet - Page 216

• Manufacturer Part Number: ML610Q429-NNNTBZ03A7
• Description: MCU 8BIT 48K FLASH 128-TQFP
• Manufacturer: Rohm Semiconductor

Specifications of ML610Q429-NNNTBZ03A7

• Core Processor: nX-U8/100
• Core Size: 8-Bit
• Speed: 4.2MHz
• Connectivity: I²C, SSP, UART/USART
• Peripherals: LCD, Melody Driver, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 48KB (24K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.1 V ~ 3.6 V
• Data Converters: A/D 2x12b, 2x24b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 70°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

14.3.3
Figure 14-7 shows the operation waveforms of the SDA and SCL signals and the I20BB flag. Table 14-1 shows the
relationship between communication speeds and HSCLK clock counts.
Note
The HSCLK clock count is set so that the communication speed may be set to 100kbps/400kbps when HSCLK is 4
MHz. When the high-speed clock frequency is not 4 MHz, select an I2C0MOD communication speed reduction rate
and an FCON0 HSCLK frequency so that the communication speed may not exceed 100kbps/400kbps.
When the slave device uses the clock cycle function (handshake function) which holds the SCL signal at a “L” level,
the time t
φ: Period of high-speed clock (HSCLK)
Communication speed
Standard mode
Fast mode
100 kｂｐｓ
400 kｂｐｓ
SDA
SCL
I20BB
(I20SP)
CYC
Table 14-1 Relationship between Communication Speeds and HSCLK Clock Counts
Operation Waveforms
and time t
Figure 14-7 Operation Waveforms of SDA and SCL Signals and I20BB Flag
t
HD:STA
Start condition
LOW
t
LOW
10% reduction
20% reduction
30% reduction
10% reduction
20% reduction
30% reduction
t
are extended.
No reduction
No reduction
(I20DW1, 0)
CYC
reduction
Speed
tHD:DAT
t
40φ
44φ
48φ
52φ
10φ
11φ
12φ
13φ
CYC
t
HIGH
t
HD:STA
14 – 12
18φ
20φ
22φ
24φ
4φ
4φ
5φ
5φ
Restart condition
t
22φ
24φ
26φ
28φ
t
LOW
6φ
7φ
7φ
8φ
SU:STA
t
HD:DAT
4φ
4φ
4φ
4φ
2φ
2φ
2φ
2φ
ML610Q428/ML610Q429 User’s Manual
t
t
18φ
20φ
22φ
24φ
SU:DAT
HIGH
4φ
4φ
5φ
5φ
Chapter 14 I
t
SU:STA
22φ
24φ
26φ
28φ
6φ
7φ
7φ
8φ
t
t
SU:DAT
SU:STO
18φ
20φ
22φ
24φ
Stop condition
4φ
5φ
5φ
6φ
2
C Bus Interface
t
SU:STO
18φ
20φ
22φ
24φ
4φ
4φ
5φ
5φ
t
BUF
t
22φ
24φ
26φ
28φ
BUF
6φ
7φ
7φ
8φ