ML610Q429-NNNTBZ03A7 Rohm Semiconductor, ML610Q429-NNNTBZ03A7 Datasheet - Page 101

• 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: -

Note:
If the system clock is switched from a low-speed clock to a high-speed clock before the high-speed clock (HSCLK)
starts oscillation, the CPU becomes inactive until HSCLK starts clock supply to the peripheral circuits.
Figure 6-12 Flow of System Clock Switching Processing (LSCLK→HSCLK)
System clock switching
High-speed operation
Wait until oscillation
stabilizes (T
SYSCLK←”1”
ENOSC←”1”
500 kHz RC
Yes
used?
mode
WAIT
)
Voltage detection by
No
Yes
VDD ≥ 1.8V?
Set high-speed oscillation mode before switching the system clock.
BLD
T
T
T
T
T
System clock switching (Low-speed clock→High-speed clock)
Start of high-speed oscillation
WAIT
WAIT
WAIT
WAIT
WAIT
= 500 μs @500 kHz RC oscillation mode
= 20 ms @Crystal/ceramic oscillation mode
= 10 ms @PLL oscillation mode
= 1 ms @Internal clock input mode
= 3 ms @2 MHz RC oscillation mode
6 – 15
No
Crystal/ceramic oscillation, PLL oscillation, external clock
input mode, and 2 MHz RC oscillation mode cannot be
used. Use 500 kHz RC oscillation mode or low-speed
clock (LSCLK). As necessary, check V
using the 500kHz RC oscillation clock.
When using crystal/ceramic oscillation, PLL oscillation,
an external clock mode, or 2 MHz RC oscillation mode
check that V
ML610Q428/ML610Q429 User’s Manual
Chapter 6 Clock Generation Circuit
DD
is 1.8V or higher by using BLD.
DD
1.3V or higher for