HD64F36912GFH Renesas Electronics America, HD64F36912GFH Datasheet - Page 103

• Manufacturer Part Number: HD64F36912GFH
• Description: IC H8 MCU FLASH 8K 32-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F36912GFH

• 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: Contains lead / RoHS non-compliant
• Eeprom Size: -

5.2.3
RCTRMDR stores the trimming data of the on-chip oscillator frequency.
Note:
Bit
4
3 to 0
Bit
7
6
5
4
3
2
1
0
*
RC Trimming Data Register (RCTRMDR)
Bit Name
TRMDRWE
Bit Name
TRMD7
TRMD6
TRMD5
TRMD4
TRMD3
TRMD2
TRMD1
TRMD0
The initial value differs from product to product in the flash memory version.
Initial
Value
0
All 1
Initial
Value
(0)*
(0)*
(0)*
(0)*
(0)*
(0)*
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
Description
Trimming Date Register Write Enable
This register can be written to when the LOCKDW bit is 0
and this bit is 1.
[Setting condition]
[Clearing conditions]
Reserved
These bits are always read as 1
Description
Trimming Data
In the flash memory version, the trimming data is loaded
from the flash memory to this register right after a reset.
These bits are always read as undefined value.
As for the masked ROM version, the on-chip oscillator
frequency can be trimmed by rewriting these bits. The
frequency generated in the on-chip oscillator changes
right after rewriting these bits. These bits are initialized to
H'00.
Frequency variation is expressed as follows (the TRMD7
bit is a sign bit):
(Min.) H'80
When writing 0 to the WRI bit while writing 1 to the
TRMDRWE bit while the PRWE bit is 1
Reset
When writing 0 to the WRI bit and writing 0 to the
TRMDRWE bit while the PRWE bit is 1
H'FC
Rev. 3.00 Sep. 14, 2006 Page 73 of 408
H'00
Section 5 Clock Pulse Generators
H'04
H'7C (Max.)
REJ09B0105-0300