m38039g6hsp Renesas Electronics Corporation., m38039g6hsp Datasheet - Page 67

• Manufacturer Part Number: m38039g6hsp
• Description: Single-chip 8-bit Cmos Microcomputer
• Manufacturer: Renesas Electronics Corporation.

3803 Group (Spec.H QzROM version)
Rev.1.10
REJ03B0166-0110
Fig 62. State transitions of system clock
Notes1: Switch the mode by the allows shown between the mode blocks. (Do not switch between the modes directly without an allow.)
CM
CM
CM
CM
CM
CM
CM
CM
Middle-speed mode
7
6
5
4
7
6
5
4
Middle-speed mode
=0
=1
=0 (8 MHz oscillating)
=0 (32 kHz stopped)
=0
=1
=0 (8 MHz oscillating)
=1 (32 kHz oscillating)
2: The all modes can be switched to the stop mode or the wait mode and return to the source mode when the stop mode or the
3: Timer operates in the wait mode.
4: When the stop mode is ended, a delay of approximately 1 ms occurs by connecting prescaler 12 and Timer 1 in middle/high-
5: When the stop mode is ended, a delay of approximately 0.25 s occurs by Timer 1 and Timer 2 in low-speed mode.
6: Wait until oscillation stabilizes after oscillating the main clock X
7: The example assumes that 8 MHz is being applied to the X
(f(φ) = 1 MHz)
(f(φ) = 1 MHz)
wait mode is ended.
speed mode.
high-speed mode.
Reset
Nov 14, 2005
Page 67 of 91
CM
“1”←→”0”
CM
“1”←→”0”
6
6
CM
CM
CM
CM
CM
CM
CM
CM
CM
CM
CM
CM
CM
CM
CM
CM
7
6
5
4
7
6
5
4
7
6
5
4
7
6
5
4
High-speed mode
=0
=0
=0 (8 MHz oscillating)
=0 (32 kHz stopped)
High-speed mode
=0
=0
=0 (8 MHz oscillating)
=1 (32 kHz oscillating)
=1
=0
=0 (8 MHz oscillating)
=1 (32 kHz oscillating)
=1
=0
=1 (8 MHz stopped)
=1 (32 kHz oscillating)
Low-speed mode
Low-speed mode
(f(φ) = 4 MHz)
(f(φ) = 16 kHz)
(f(φ) = 16 kHz)
(f(φ) = 4 MHz)
IN
pin and 32 kHz to the X
IN
before the switching from the low-speed mode to middle/
b7
CIN
b4
pin. φ indicates the internal clock.
CM
CM
CM
b7 b6
0 : I/O port function (stop oscillating)
1 : X
0 : Operating
1 : Stopped
0 0 : φ = f(X
0 1 : φ = f(X
1 0 : φ = f(X
1 1 : Not available
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
4
5
7
, CM
: Port X
: Main clock (X
CIN-
6
X
: Main clock division ratio selection bit
COUT
CPU mode register
(CPUM : address 003B
C
IN
IN
CIN
switch bit
)/2 (High-speed mode)
)/8 (Middle-speed mode)
oscillating function
)/2 (Low-speed mode)
IN
-X
OUT
) stop bit
16
)