ML610Q428-NNNTBZ03A7 Rohm Semiconductor, ML610Q428-NNNTBZ03A7 Datasheet - Page 119

• 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: -

8.3
undefined data during counting.
Figure 10-2 shows an example of the program for reading T1KCL and T1LCRH.
By setting the T1KRUN bit of the 1kHz timer control register (T1KCON) to “1”, the 1kHz timer starts counting of the
1kHz timer counter registers L or H (T1KCRL, T1KCRH).
By dividing the T2KHz signal frequency (2.048kHz) of the low-speed timer base counter (LTBC) by the binary/ternary
counter, the timer generates a 1kHz signal. Based on the 1kHz signal, a 1kHz timer interrupt request signal (T1KINT)
is generated by the decimal counters of T1KCRL and T1KCRH. The period of the 1kHz timer interrupt can be selected
between the 10Hz interrupt or 1Hz interrupt using the T1KSEL bit of T1KCON.
When write operation is performed for T1KCRL or T1KCRH, the value of the binary/ternary counter and the value of
T1KCRL or T1KCRH is cleared to “0”.
Data can be read from T1KCRL and T1KCRH. When reading data from T1KCRL or T1KCRH in the 1kHz timer
operation start state, read T1KCRL or T1KCRH twice and check that the values match to prevent the reading of
MARK:
;
;
Description of Operation
LEA offset T1KCRL ; EA←T1KCRL address
L ER0, [EA]
L ER2, [EA]
CMP ER0, ER1
BNE MARK
Figure 8-2 Example of Program for Reading T1KCRL and T1KCRH
:
; First read
; Second read
; Comparison of T1KCRL and T1CKRH
; To MARK when not matched.
８ – 5
ML610Q428/ML610Q429 User’s Manual
Chapter 8 1 kHz Timer (1kHzTM)