P90CE201 Datasheet, PDF (9/77 Pages) NXP Semiconductors – 16-bit microcontroller

Philips Semiconductors
16-bit microcontroller
Product specification
P90CE201
August 1993
bit 7 6 5 4 3 2 1 0
(a) Bit data (1 Byte = 8 bits).
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSB
BYTE 0
LSB
BYTE 1
BYTE 2
BYTE 3
(b) Integer data (1 Byte = 8 bits).
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSB
WORD 0
LSB
WORD 1
WORD 2
(c) Word data (16 bits).
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSB
HIGH ORDER
LONG WORD 0
LOW ORDER
LSB
LONG WORD 1
HIGH ORDER
LOW ORDER
LONG WORD 2
HIGH ORDER
LOW ORDER
(d) Long-word data (32 bits).
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSB
HIGH ORDER
ADDRESS 0
LOW ORDER
LSB
ADDRESS 1
HIGH ORDER
LOW ORDER
ADDRESS 2
HIGH ORDER
LOW ORDER
(e) Addresses (1 address =32 bits).
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MSB BCD 0 BCD 1 LSB
BCD 2
BCD 3
BCD 4 BCD 5
BCD 6 BCD 7
(f) BCD data (2 BCD digits = 1 Byte).
MCD505
Fig.4 Memory data organization.
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