ML610Q428-NNNTBZ03A7 Rohm Semiconductor, ML610Q428-NNNTBZ03A7 Datasheet - Page 89

• Manufacturer Part Number: ML610Q428-NNNTBZ03A7
• Description: MCU 8BIT 48K FLASH 128-TQFP
• Manufacturer: Rohm Semiconductor

Specifications of ML610Q428-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: 14
• 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: -

6.2.2
• OSCM2, OSCM1, OSCM0 (bits 6, 3, 2)
Address: 0F002H
Access: R/W
Access size: 8/16 bits
Initial value: 33H
FCON0 is a special function register (SFR) to control the high-speed clock generation circuit and to select system
clock.
[Description of Bits]
− When switching the high-speed oscillation mode, please first switch back to low speed clock before switching to
Initial value
•
The SYSC1 and SYSC0 bits are used to select the frequency of the high-speed clock (HSCLK) used for system
clock and periphera1 circuits (including high-speed time base counter). OSCLK, 1/2OSCLK, 1/4OSCLK, or
1/8OSCLK can be selected. The maximum operating frequency guaranteed for the system clock (SYSCLK) of this
LSI is 4.2 MHz.
At system reset, 1/8OSCLK is selected.
The OSCM2, OSCM1 and OSCM0 bits are used to select the mode of the high-speed clock generation circuit.
500kHz RC oscillation mode, crystal/ceramic oscillation mode, PLL oscillation mode, external clock input mode, or
2MHz RC oscillation mode can be selected.
The setting of OSCM1 and OSCM0 can be changed only when high-speed oscillation is being stopped (ENOSC bit
of FCON1 is “0”). At system reset, RC oscillation mode is selected.
other high-speed clock (set the ENOSC bit and SYSCLK bit of FCON1 to “0”).
FCON0
R/W
OSCM2
SYSC1, SYSC0 (bits 1, 0)
SYSC1
0
0
0
0
1
0
0
1
1
Frequency Control Register 0 (FCON0)
R/W
⎯
7
0
OSCM1
SYSC0
X
0
0
1
1
0
1
0
1
OSCM2
R/W
0
6
OSCLK (1/2OSCLK in built-in PLL oscillation mode)
1/2OSCLK
1/4OSCLK
1/8OSCLK (initial value)
OSCM0
X
0
1
0
1
OUTC1
R/W
5
1
500kHz RC oscillation mode (initial value)
Crystal/ceramic oscillation mode
Built-in PLL oscillation mode
External clock input mode
2MHz RC oscillation mode
OUTC0
R/W
4
1
6 – 3
Description
OSCM1
R/W
3
0
Description
ML610Q428/ML610Q429 User’s Manual
OSCM0
Chapter 6 Clock Generation Circuit
R/W
2
0
SYSC1
R/W
1
1
SYSC0
R/W
0
1