
ML62Q1000 Series User’s Manual
Appendix E. List of Notes
FEUL62Q1000
E-11
See Section 12.2.7 "I
2
C Bus 0 Mode Register (Master) (I2UM0MOD)".
[ ] When using the high-speed clock for the I2C operation, specify the following I2C operating clock
frequency depending on the mode and the reference frequency of the PLL oscillation.
When HSCLK = 24MHz
Standard mode:
HSCLK to 1/4HSCLK
Fast mode:
HSCLK to 1/2HSCLK
1Mbps mode:
HSCLK to 1/2HSCLK
When HSCLK = 16MHz
Standard mode:
HSCLK to 1/2HSCLK
Fast mode:
HSCLK
1Mbps mode:
HSCLK
See Section 12.2.8 "I
2
C Bus 0 Status Register (Master) (I2UM0STR)".
[ ] Do not update each bit of the I2UM0STR register by using the bit symbol. Update it by using a byte
access, not so that unintented bits are changed by the bit access instructions.
[ ] I2UM0BB bit and I2UM0BO bit are reset one I2C operating clock after writing "1" to the bits.
See Section 12.2.12 "I
2
C Bus 0 Control Register (Slave) (I2US0CON)".
[ ] Switch the system clock to the high-speed clock when releasing the communication wait status.
See Section 12.2.13 "I
2
C Bus 0 Mode Register (Slave) (I2US0MD)".
[ ] Stop the operation by resetting I2US0EN bit to "0" before entering STOP-D mode. Have the same
handling if disable the wake-up from STOP mode by matching the slave address.
See Section 12.2.14 "I
2
C Bus 0 Status Register (Slave) (I2US0STA)".
[ ] Do not update each bit of the I2UM0STA register by using the bit symbol. Update it by using a byte
access, not so that unintented bits are changed by the bit access instructions.
See Section 12.3.4 "Slave Mode Communication Operation Timing".
[ ] If entering to the STOP/STOP-D mode while the slave mode is enabled, first make sure that
communication is not in progress (from coincidence of address to reception of stop condition).
See Section 12.3.5 "Operation Waveforms".
[ ] When the slave device uses the clock stretch function which holds the I2CU0_SCL pin at "L" level, the
time tCYC and time tLOW are extended.
Chapter 13 I
2
C Bus Master
See Section 13.1.4 "Pin Setting".
[ ] Use external pull-up resistors for SDA pin and SCL pin referring to the I
2
C bus specification. The
internal pull-up resistors unsatisfy the I
2
C bus specification. See the data sheet for each product for the
value of internal pull-up resistors.
[ ] Do not connect multiple master devices on the I
2
C bus.
See Section 13.2.5 "I
2
C Master n Control Register (I2MnCON:n=0,1)".
[ ] Do not update the I2MnACT bit by using the bit symbol. Update it by using a byte access, not so that
unintented bits are changed by the bit access instructions.
[ ] When the I2MnST bit is "1", write the I2MnCON register in the control register setting wait state.
See Section 13.2.7 "I
2
C Master n Status Register (I2MnSTR: n=0,1)".
[ ] Do not update each bit of the I2MnSTR register by using the bit symbol. Update it by using a byte
access, not so that unintented bits are changed by the bit access instructions.
[ ] I2MnBB bit and I2MnBO bit are reset one I
2
C operating clock after writing "1" to the bits.
Chapter 14 DMA Controller
See Section 14.1 "General Description".
[ ] Do not use the DMA controller and the Coprocessor (Hardware multiplier/divider) simultaneously.
See Section 14.2.2 "DMA Channel n Transfer Mode Register (DCnMOD: n = 0, 1)".
[ ] Set the bits except for DCnSTRG bit when the transfer is disabled (DCnEN bit of DCEN register = 0).
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...