3069RF-ZTAT Datasheet, PDF (677/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

 SUM : Checksum
(10) Programming Unit Inquiry
The boot program will return the programming unit used to program data.
Command H'27
 Command, H'27, (1 byte) : Inquiry regarding programming unit
Response H'37
Size
Programming unit
SUM
 Response, H'37, (1 byte) : Response to programming unit inquiry
 Size (1 byte) : The number of bytes that indicate the programming unit, which is fixed to 2
 Programming unit (2 bytes) : A unit for programming
This is the unit for reception of programming.
 SUM (1 byte) : Checksum
(11) New Bit-Rate Selection
The boot program will set a new bit rate and return the new bit rate.
This selection should be sent after sending the clock mode selection command.
Command H'3F
Size
Bit rate
Input frequency
Number of Multiplication Multiplication
multiplication ratio 1
ratio 2
ratios
SUM
 Command, H'3F, (1 byte) : Selection of new bit rate
 Size (1 byte) : The number of bytes that represents the bit rate, input frequency, number of
multiplication ratios, and multiplication ratio
 Bit rate (2 bytes) : New bit rate
One hundredth of the value (e.g. when the value is 19200 bps, the bit rate is H'00C0, which
is D'192.)
 Input frequency (2 bytes) : Frequency of the clock input to the boot program
This is valid to the hundredths place and represents the value in MHz multiplied by 100.
(e.g. when the value is 20.00 MHz, the input frequency is H'07D0 (= D'2000).)
 Number of multiplication ratios (1 byte) : The number of multiplication ratios to which the
device can be set. Normally the value is two: main operating frequency and peripheral
module operating frequency. (With this LSI it should be set to H'01.)
 Multiplication ratio 1 (1 byte) : The value of multiplication or division ratios for the main
operating frequency
Rev. 5.0, 09/04, page 655 of 978