DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 687

• 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: -

Bits 6 to 2—Reserved: These bits cannot be modified and are always read as 0.
Bits 1 and 0—Mode Select 1 and 0 (MDS1, MDS0): These bits indicate values that reflects the
input levels of mode pins MD1 and MD0 (the current operating mode). Bits MDS1 and MDS0
correspond to pins MD1 and MD0, respectively. These are read-only bits, and cannot be modified.
When MDCR is read, the input levels of mode pins MD1 and MD0 are latched in these bits.
22.3
The on-chip ROM is connected to the CPU by a 16-bit data bus, and both byte and word data is
accessed in one state. Even addresses are connected to the upper 8 bits, and odd addresses to the
lower 8 bits. Word data must start at an even address.
The mode pins (MD1 and MD0) and the EXPE bit in MDCR can be set to enable or disable the
on-chip ROM, as shown in table 22.2.
In normal mode, the maximum amount of ROM that can be used is 56 kbytes.
Table 22.2 Operating Modes and ROM
MCU
Operating
Mode
Mode 1
Mode 2
Mode 3
Note:
* 128 kbytes in the H8S/2148 and H8S/2144, 96 kbytes in the H8S/2143, 64 kbytes in the
Operation
Section 22 ROM
H8S/2147, H8S/2147N, and H8S/2142.
CPU
Operating
Mode
Normal
Advanced
Advanced
Normal
Normal
Operating Mode
Description
Expanded mode with
on-chip ROM disabled
Single-chip mode
Expanded mode with
on-chip ROM enabled
Single-chip mode
Expanded mode with
on-chip ROM enabled
(Mask ROM Version, H8S/2148 F-ZTAT, H8S/2147N F-ZTAT, H8S/2144 F-ZTAT, and H8S/2142 F-ZTAT)
MD1
0
1
Rev. 4.00 Sep 27, 2006 page 641 of 1130
Mode Pins
MD0
1
0
1
MDCR
EXPE
1
0
1
0
1
REJ09B0327-0400
On-Chip ROM
Disabled
Enabled *
Enabled
(max. 56 kbytes)