ML610Q408-NNNTBZ03A7 Rohm Semiconductor, ML610Q408-NNNTBZ03A7 Datasheet - Page 105
ML610Q408-NNNTBZ03A7
Manufacturer Part Number
ML610Q408-NNNTBZ03A7
Description
MCU 8BIT 16K FLASH 8CH 100-TQFP
Manufacturer
Rohm Semiconductor
Series
-r
Datasheets
1.ML610Q482P-NNNTB03A7.pdf
(20 pages)
2.ML610Q407P-NNNTB03A7.pdf
(33 pages)
3.ML610Q407P-NNNTB03A7.pdf
(391 pages)
Specifications of ML610Q408-NNNTBZ03A7
Core Processor
nX-U8/100
Core Size
8-Bit
Speed
2MHz
Connectivity
SSP, UART/USART
Peripherals
LCD, Melody Driver, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.25 V ~ 3.6 V
Data Converters
A/D 2x16b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 70°C
Package / Case
100-TFQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ML610Q408-NNNTBZ03A7
Manufacturer:
Rohm Semiconductor
Quantity:
10 000
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7.3 Description of Operation
7.3.1
The low-speed time base counter (LTBC) starts counting from 0000H on the LSCLK falling edge after system reset.
The T128HZ, T32HZ, T16HZ, and T2HZ outputs of LTBC are used as time base interrupts and an interrupt is requested
on the falling edge of each output. Each of LTBC outputs is also used as an operation clock for peripheral circuits.
The output data of T128HZ to T1HZ of LTBC can be read from the low-speed time base counter register (LTBR). When
reading the data, read LTBR twice and check that the two values coincide to prevent reading of undefined data during
counting.
Figure 7-3 shows an example of program to read LTBR.
LTBR is reset when write operation is performed and the T128HZ to T1HZ outputs are set to “0”. Write data is invalid.
Since an interrupt occurs if a falling edge occurs in the T128Hz to T2HZ outputs during writing to LTBR, take care in
software programming.
Figure 7-4 shows interrupt generation timing and reset timing of the time base counter output by writing to LTBR.
Low-speed Time Base Counter
MARK:
;
;
LTBR Write
T256HZ
T128HZ
T64HZ
T32HZ
T16HZ
T16HZ
T8HZ
T4HZ
T2HZ
T1HZ
LEA
L
L
CMP
BNE
Figure 7-4 Interrupt Timing and Reset Timing by Writing to LTBR
:
Figure 7-3 Programming Example for Reading LTBR
offset LTBR
R0,
R1,
R0,
MARK
[EA]
[EA]
R1
; EA LTBR address
; 1st read
; 2nd read
; Comparison for LTBR
; To MARK when the values do not coincide
7-7
ML610Q407/ML610Q408/ML610Q409 User's Manual
Chapter 7 Time Base Counter
Indicates interrupt timing.
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