DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 92

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

3.2
The following registers are related to the operating mode.
• Mode control register (MDCR)
• System control register (SYSCR)
3.2.1
MDCR monitors the current operating mode and operating mode settings.
Note:
Rev.2.00 May. 28, 2009 Page 52 of 732
REJ09B0059-0200
Bit
7
6 to 3
2
1
0
* Determined by pins MD2 to MD0.
Register Descriptions
Mode Control Register (MDCR)
Bit Name
EXPE
⎯
MDS2
MDS1
MDS0
Initial Value
0
All 0
⎯*
⎯*
⎯*
R/W
R/W
R
R
R
R
Descriptions
Extended Mode Set Up
0: Single-chip mode
1: Extended mode
Reserved
Mode Select 2 to 0
These bits indicate the input levels at pins MD2 to
MD0 (the current operating mode). Bits MDS2 to
MDS0 correspond to MD2 to MD0. MDS2 to
MDS0 are read-only bits and they cannot be
written to
The mode pin (MD2 to MD0) input levels are
latched into these bits when MDCR is read.
These latches are canceled by a reset
Extended Mode Enable