EZ80F91MCU Datasheet, PDF (325/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
306
Table 197. eZ80 Product ID High Byte Register
(ZDI_ID_H = 01h in the ZDI Register Read Only Address Space,
ZDI_ID_H = 0001h in the I/O Register Address Space)
Bit
Reset
CPU Access
Note: R = Read Only.
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
Bit
Position
[7:0]
ZDI_ID_H
Value Description
00h {ZDI_ID_H, ZDI_ID_L} = {00h, 08h} indicates the
eZ80F91 device.
eZ80 Product ID Revision Register
The eZ80 Product ID Revision register identifies the current revision of the
eZ80F91 product. See Table 198. The revision register use the same numbering
used in the mask revision of the die. The first nibble (most-significant) corre-
sponds to a full mask revision, while the second nibble refers to a partial mask
revision.
Table 198. eZ80 Product ID Revision Register
(ZDI_ID_REV = 02h in the ZDI Register Read Only Address Space,
ZDI_ID_REV = 0002h in the I/O Register Address Space)
Bit
7
6
5
4
3
2
1
0
Reset
X
X
X
X
X
X
X
X
CPU Access
R
R
R
R
R
R
R
R
Note: X = Undetermined; R = Read Only.
Bit
Position
[7:0]
ZDI_ID_REV
Value Description
00h– Identifies the current revision of the eZ80F91 product.
FFh
PS019209-0504
PRELIMINARY
ZiLOG Debug Interface