HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 535

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.1.6
Register Configuration: The operating mode of the H8/3437SF is controlled by the mode pins
and the mode control register (MDCR). Table 21.4 shows the MDCR register configuration.
Table 21.4 Register Configuration
Name
Mode control register
Mode Control Register (MDCR)
Notes: *1 H8/3437SF (S-mask model, single-power-supply on-chip flash memory version) only.
MDCR is an 8-bit register used to set the operating mode of the H8/3437SF and to monitor the
current operating mode.
Bit 7—Expanded Mode Enable (EXPE): Sets expanded mode. In mode 1, this bit is fixed at 1
and cannot be modified. In modes 2 and 3, this bit has a fixed initial value of 0 and cannot be
modified.
This bit can be read and written only in boot mode.
Bit 7: EXPE
0
1
Bits 6 and 5—Reserved: These bits cannot be modified and are always read as 1.
Bits 4 and 3—Reserved: These bits cannot be modified and are always read as 0.
Bit 2—Reserved: This bit cannot be modified and is always read as 1.
Bit
Initial value
Read/Write
*2 Determined by the mode pins (MD
Mode Control Register (MDCR)
Otherwise, this is a reserved bit that is always read as 1.
EXPE
R/W
—
Description
Single-chip mode is selected
Expanded mode is selected (writable in boot mode only)
7
* 2
*2
*1
Abbreviation
MDCR
—
—
6
1
—
—
5
1
R/W
R/W
1
and MD
—
—
4
0
Initial Value
Undefined
(Depends on operating mode)
0
).
—
—
3
0
—
—
2
1
MDS1
—
1
R
* 2
Address
H'FFC5
MDS0
—
0
R
* 2
503