DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 747

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Bit 3—Flash Memory Control Register Enable (FLSHE): Setting the FLSHE bit to 1 enables
read/write access to the flash memory control registers. If FLSHE is cleared to 0, the flash
memory control registers are deselected. In this case, the flash memory control register contents
are retained.
Bit 2—Reserved: Do not write 1 to this bit.
Bits 1 and 0—Internal Clock Select 1 and 0 (ICKS1, ICKS0): These bits control 8-bit timer
operation. See section 12, 8-Bit Timers, for details.
23.6
When pins are set to on-board programming mode, program/erase/verify operations can be
performed on the on-chip flash memory. There are two on-board programming modes: boot mode
and user program mode. The pin settings for transition to each of these modes are shown in table
23.6. For a diagram of the transitions to the various flash memory modes, see figure 23.3.
Only advanced mode setting is possible for boot mode.
In the case of user program mode, established in advanced mode or normal mode, depending on
the setting of the MD0 pin. In normal mode, only programming of a 56-kbyte area of flash
memory is possible.
Table 23.6 Setting On-Board Programming Modes
Note:
Bit 3
FLSHE
0
1
Mode Name
Boot mode
User program mode
* Can be used as I/O ports after boot mode is initiated.
Section 23 ROM
On-Board Programming Modes
Description
Flash memory control registers deselected
Flash memory control registers selected
Mode
(H8S/2148 F-ZTAT A-Mask Version, H8S/2147 F-ZTAT A-Mask Version, H8S/2144 F-ZTAT A-Mask Version)
CPU Operating Mode
Advanced mode
Advanced mode
Normal mode
Rev. 4.00 Sep 27, 2006 page 701 of 1130
MD1
0
1
0
1
MD0
0
P92
1 *
—
—
REJ09B0327-0400
P91
1 *
—
—
(Initial value)
P90
1 *
—
—