M38517F8FP Renesas Electronics America, M38517F8FP Datasheet - Page 54

• 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
Fig. 59 CPU rewrite mode set/release flowchart
Rev.1.01
Oct 15, 2003
(Built-in 24 KB or more ROM)
Notes 1: When starting the MCU in the single-chip mode, supply 4.5 V to 5.5 V to the CNVss
2: Set bits 6, 7 (main clock division ratio selection bits) at CPU mode register (003B
3: Before exiting the CPU rewrite mode after completing erase or program operation,
pin until checking the CPU rewrite mode entry flag.
always be sure to execute the read array command or reset the flash memory.
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J u m p t o c o n t r o l p r o g r a m t r a n s f e r r e d i n R A M
( S u b s e q u e n t o p e r a t i o n s a r e e x e c u t e d b y c o n t r o l
p r o g r a m i n t h i s R A M )
E x e c u t e r e a d a r r a y c o m m a n d o r r e s e t f l a s h
m e m o r y b y s e t t i n g f l a s h m e m o r y r e s e t b i t ( b y
w r i t i n g “ 1 ” a n d t h e n “ 0 ” i n s u c c e s s i o n ) (Note 3)
C h e c k C P U r e w r i t e m o d e e n t r y f l a g
Using software command execute erase,
program, or other operation
W r i t e “ 0 ” t o C P U r e w r i t e m o d e s e l e c t b i t
S e t C P U r e w r i t e m o d e s e l e c t b i t t o “ 1 ” ( b y
w r i t i n g “ 0 ” a n d t h e n “ 1 ” i n s u c c e s s i o n )
T r a n s f e r C P U r e w r i t e m o d e c o n t r o l p r o g r a m
t o R A M
Single-chip mode or Boot mode (Note 1)
Set CPU mode register (Note 2)
S t a r t
End
S e t t i n g
R e l e a s e d
16
).