HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 191
HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
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For example, when the DTC vector address table is located in on-chip ROM, normal mode is set,
and data is transferred from on-chip ROM to an internal I/O register, then the time required for the
DTC operation is 13 states. The time from activation to the end of data write is 10 states.
7.6
7.6.1
The procedure for using the DTC with interrupt activation is as follows:
1. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM.
2. Set the start address of the register information in the DTC vector address.
3. Set the corresponding bit in DTCER to 1.
4. Set the enable bits for the interrupt sources to be used as the activation sources to 1. The DTC
5. After one data transfer has been completed, or after the specified number of data transfers have
7.6.2
The procedure for using the DTC with software activation is as follows:
1. Set the MRA, MRB, SAR, DAR, CRA, and CRB register information in on-chip RAM.
2. Set the start address of the register information in the DTC vector address.
3. Check that the SWDTE bit is 0.
4. Write 1 to the SWDTE bit and the vector number to DTVECR.
5. Check the vector number written to DTVECR.
6. After one data transfer has been completed, if the DISEL bit is 0 and a CPU interrupt is not
is activated when an interrupt used as an activation source is generated.
been completed, the DTCE bit is cleared to 0 and a CPU interrupt is requested. If the DTC is to
continue transferring data, set the DTCE bit to 1.
requested, the SWDTE bit is cleared to 0. If the DTC is to continue transferring data, set the
SWDTE bit to 1. When the DISEL bit is 1 or after the specified number of data transfers have
been completed, the SWDTE bit is held at 1 and a CPU interrupt is requested.
Procedures for Using DTC
Activation by Interrupt
Activation by Software
Rev. 2.0, 08/02, page 151 of 788
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