Z8523016VEG Datasheet, PDF (87/118 Pages) Zilog, Inc. – Enhanced Serial Communications Controller

Z80230/Z85230/L
Product Specification
82
Table 44 lists the Z80230 general timing characteristics details.
Table 44. Z80230 General Timing Characteristics
10 MHz
16 MHz
No. Symbol
Parameter
Min. Max. Min. Max. Notes
1
TdPC (REQ) PCLK Low to W/REQ Valid
200
110
9
2
TsPC (W)
PCLK Low to Wait Inactive
300
180
9
3
TsRXC (PC) RxC High to PCLK High Setup NA
NA
1, 4, 9
Time
4
TsRXD (RXCr) RxD to RxC High Setup Time 0
0
1,9
5
ThRXD (RxCr) RxD to RxC High Hold Time 125
60
1,9
6
TsRXD (RXCf) RxD to RxC Low Setup Time 0
0
1, 5, 9
7
ThRXD (RXCf) RxD to RxC Low Hold Time 125
60
1, 5, 9
8
TsSY (RXC) SYNC to RxC High Setup Time -150
-100
1, 9
9
ThSY (RXC) SYNC to RxC High Hold Time 5
5
1, 10
10 TsTXC (PC) TxC Low to PCLK High Setup NA
NA
2, 4, 9
Time
11 TdTXCf (TXD) TxC Low to TxD Delay
150
85
2, 9
12 TdTxCr (TXD) TxC High to TxD Delay
150
85
2, 5, 9
13 TdTXD (TRX) TxD to TRxC Delay
140
80
9
14 TwRTXh
RTxC High Width
120
80
6, 9
15 TwRTXI
TRxC Low Width
120
80
6, 9
16a TcRTX
RTxC Cycle Time
400
244
6, 7, 9
16b TxRX (DPLL) DPLL Cycle Time Minimum
50
31
7, 8, 9
17 TcRTXX
Crystal Oscillator Period
100
1000 100
1000 3, 9
18 TwTRXh
TRxC High Width
120
80
6, 9
19 TwTRXI
TRxC Low Width
120
80
6, 9
20 TcTRX
TRxC Cycle Time
400
244
6, 7, 9
21 TwEXT
DCD or CTS Pulse Width
120
70
9
22 TwSY
SYNC Pulse Width
120
70
9
PS005308-0609
Electrical Characteristics