z85230 ZiLOG Semiconductor, z85230 Datasheet - Page 99

• Manufacturer Part Number: z85230
• Description: Enhanced Serial Communications Controller
• Manufacturer: ZiLOG Semiconductor

Table 47. Z85230 General Timing Table
PS005303-0907
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Symbol
TdPC(REQ)
TdPC(W)
TsRXC(PC)
TsRXD(RXCr
)
ThRXD(RxCr
)
TsRXD(RXCf
)
ThRXD(RXCf
)
TsSY(RXC)
ThSY(RXC)
TsTXC(PC)
TdTXCf(TXD
)
TdTxCr(TXD) TxC to TxD
TdTXD(TRX) TxD to TRxC
TwRTXh
TwRTXI
Table 47
the Z85230 Read/Write Timing characteristics details.
Parameter
PCLK to W/REQ
Valid
PCLK to Wait
Inactive
RxC to PCLK
Setup Time
RxD to RXC
Setup Time
RxD to RXC
Hold Time
RxD to RXC
Setup Time
RXD to RXC
Hold Time
Setup Time
SYNC to RXC
Hold Time
TxC to PCLK
Setup Time
TxC to TxD
Delay
Delay
Delay
RTxC High
Width
RTxC Low Width 130
SYNC to RXC
describes the Z85230 general timing characteristics details.
2,4
Min
NA
150
0
150
–200
5
NA
130
8.5 MHz
Max
250
350
0
190
190
200
Min
NA
125
0
125
–150
5
NA
120
120
10 MHz
Max
200
300
0
150
150
140
Min
NA
50
0
50
–100
5
NA
80
80
16 MHz
Max
80
180
0
80
80
80
Product Specification
Electrical Characteristics
NA
45
0
45
–90
5
NA
70
Min
70
Table 48
20 MHz
Z85230/Z80230
Max
70
170
0
70
70
70
describes
9
9
1, 4, 9
1, 9
1, 9
1, 5, 9
1, 5, 9
1, 9
1, 10
2, 9
2, 5, 9
9
6, 9
Notes
6, 9
94