M38D59GCHP#U0 Renesas Electronics America, M38D59GCHP#U0 Datasheet - Page 18
![IC 740/38D5 MCU QZ-ROM 80LQFP](/photos/12/37/123728/m38d59gchp_u0_sml.jpg)
M38D59GCHP#U0
Manufacturer Part Number
M38D59GCHP#U0
Description
IC 740/38D5 MCU QZ-ROM 80LQFP
Manufacturer
Renesas Electronics America
Series
740/38000r
Datasheet
1.M38D58G8FPU0.pdf
(144 pages)
Specifications of M38D59GCHP#U0
Core Processor
740
Core Size
8-Bit
Speed
12.5MHz
Connectivity
SIO, UART/USART
Peripherals
LCD, LED, PWM, WDT
Number Of I /o
59
Program Memory Size
48KB (48K x 8)
Program Memory Type
QzROM
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
80-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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38D5 Group
Rev.3.04
REJ03B0158-0304
Fig. 9 Switch procedure of CPU mode register
N
N
Wait by on-chip oscillator operation until
Wait by on-chip oscillator operation until
Switch the main clock division ratio
selection bit (bit 7, 6 = “00” or “10”)
Switch the main clock division ratio
selection bit (bit 7, 6 = “00” or “10”)
(bit 3 of CPUM or bit 7, 6 = “01”)
(bit 3 of CPUM or bit 7, 6 = “01”)
establishment of oscillator clock
establishment of oscillator clock
Select internal system clock
Select internal system clock
Low-speed/X
Low-speed/X
(bits 4 and 5 of CPUM)
(bits 4 and 5 of CPUM)
May 20, 2008 Page 16 of 134
After releasing reset
After releasing reset
Start the oscillation
Start the oscillation
OSCSEL ?
Main routine
Main routine
Reset
Reset
Y
Y
L
IN
IN
mode ?
mode ?
H
Start with an on-chip oscillator.
Initial value of CPUM is E0
Initial value of CPUM2 is 00
As for the details of condition for
transition among each mode,
refer to the state transition of system clock.
Oscillator starts oscillation.
Do not change bit 3, bit 6 and bit 7 of CPUM until
oscillation stabilizes.
System can operate in on-chip oscillator mode until
oscillation stabilize.
Select internal system clock.
Do not change bit 3, bit 6 and bit 7 of CPUM at the
same time.
Select main clock division ratio.
Switch to frequency/2 or frequency/4 mode here,
if necessary.
Start with an on-chip oscillator.
Initial value of CPUM is E0
Initial value of CPUM2 is 00
As for the details of condition for
transition among each mode,
refer to the state transition of system clock.
Oscillator starts oscillation.
Do not change bit 3, bit 6 and bit 7 of CPUM until
oscillation stabilizes.
System can operate in on-chip oscillator mode until
oscillation stabilize.
Select internal system clock.
Do not change bit 3, bit 6 and bit 7 of CPUM at the
same time.
Select main clock division ratio.
Switch to frequency/2 or 4 mode here, if necessary.
16
16
16
16
.
.
.
.
Wait by operation until establishment
After releasing reset
<Flash memory version>
The CPU starts its operation
in the built-in X
Initial value of CPUM is 40
Initial value of CPUM2 is 01
<QzROM version>
IN
mode.
16
16
.
.
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