DF36912GFH Renesas Electronics America, DF36912GFH Datasheet - Page 101

• Manufacturer Part Number: DF36912GFH
• Description: MCU 3/5V 8K 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of DF36912GFH

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 12MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

5.2
Clock oscillators are controlled by the following registers.
5.2.1
RCCR controls the on-chip oscillator.
Bit
7
6
5
4 to 2
1
0
RC control register (RCCR)
RC trimming data protect register (RCTRMDPR)
RC trimming data register (RCTRMDR)
Clock control/status register (CKCSR)
Register Descriptions
RC Control Register (RCCR)
Bit Name
RCSTP
FSEL
VCLSEL
RCPSC1
RCPSC0
Initial
Value
0
0
0
All 0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Description
On-chip Oscillator Standby
The internal on-chip oscillator standby state is entered by
setting this bit to 1.
Frequency Select for On-chip Oscillator
0: 8MHz
1: 10MHz
Power Supply Select for On-chip Oscillator
0: Selects VBGR
1: Selects VCL
When VCL is selected, the accuracy of the on-chip
oscillator frequency cannot be guaranteed.
Reserved
These bits are always read as 0.
Division Ratio Select for On-chip Oscillator
The division ratio of R
bit.
These bits can be written to only when the CKSTA bit in
CKCSR is 0.
0X: R
10: R
11: R
OSC
OSC
OSC
/2
/4
(not divided)
Rev. 3.00 Sep. 14, 2006 Page 71 of 408
OSC
changes right after rewriting this
Section 5 Clock Pulse Generators
REJ09B0105-0300