Single-Chip Microcontrollers User's Manual

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CHAPTER 3 FEATURES OF ARCHITECTURE AND MEMORY MAP

56 User’s Manual U10676EJ3V0UM

Figure 3-7.

PD754244 I/O Map (5/8)

Hardware name (symbol)

Number of bits that

Bit

Address R/W

can be manipulated

manipulation Remarks

b3 b2 b1 b0 1-bit 4-bit 8-bit

addressing

FC0H Bit sequential buffer 0 (BSB0) R/W

mem.bit

FC1H Bit sequential buffer 1 (BSB1) R/W

pmem.@L

FC2H Bit sequential buffer 2 (BSB2) R/W

FC3H Bit sequential buffer 3 (BSB3) R/W

FC4H Unmounted

FC5H

FC6H

Reset detection flag register (RDF)

R/W

– mem.bit

Manipulation can be performed only on bits 2 and 3.

KRF WDF ––

FC7H Unmounted

FCDH

FCEH R/W

– mem.bit A write to an unmounted area is invalid, and

EEPROM write control register (EWC) the read value is undefined.

FCFH

–

Notes 1. In bit manipulation: EWE = R/W, EWST = R only, ERE = R/W.

2. These are not registered as reserved words.

................................................................................

EWE

Note 1

EWST

Note 1

––

ERE

Note 1

EWTC6

Note 2

EWTC5

Note 2

EWTC4

Note 2