M38517F8FP Renesas Electronics America, M38517F8FP Datasheet - Page 70

• Manufacturer Part Number: M38517F8FP
• Description: MCU 8-Bit 740 CISC 32KB Flash 5V 42-Pin SSOP
• Manufacturer: Renesas Electronics America

Specifications of M38517F8FP

• Package: 42SSOP
• Family Name: 740
• Maximum Speed: 8 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 34
• Interface Type: I2C-BUS
• On-chip Adc: 5-chx10-bit
• Operating Temperature: -20 to 85 °C
• Number Of Timers: 4

3851 Group
(Built-in 24 KB or more ROM)
Download Command
This command downloads a program to the RAM for execution.
Execute the download command as explained here following.
(1) Transfer the “FA
” command code with the 1st byte.
16
(2) Transfer the program size with the 2nd and 3rd bytes.
(3) Transfer the check sum with the 4th byte. The check sum is
added to all data sent with the 5th byte onward.
(4) The program to execute is sent with the 5th byte onward.
When all data has been transmitted, if the check sum matches,
the downloaded program is executed. The size of the program will
vary according to the internal RAM.
S
CLK1
Data size
Data size
Check
Program
RxD
FA
16
(low)
(high)
sum
data
Program
TxD
data
S
(BUSY)
RDY1
Fig. 71 Timing for download
Rev.1.01
Oct 15, 2003
page 68 of 89