Z85C3008PEG Datasheet, PDF (75/81 Pages) Zilog, Inc. – CMOS SCC Serial Communications Controller

CMOS SCC Serial Communications Controller
Product Specification
67
Table 11. Z80C30 General Timing¹
8 MHz
10 MHz
No Symbol
1 TdPC(REQ)
2 TsPC(W)
3 TsRXC(PC)
4 TsRXD(RXCr)
5 ThRXD(RxCr)
6 TsRXD(RXCf)
7 ThRXD(RXCf)
8 TsSY(RXC)
9 ThSY(RXC)
10 TsTXC(PC)
11 TdTXCf(TXD)
12 TdTxCr(TXD)
13 TdTXD(TRX)
14 TwRTXh
15 TwRTXI
16a TcRTX
16b TxRx (DPLL)
17 TcRTXX
18 TwTRXh
19 TwTRXI
20 TcTRX
21 TwEXT
22 TwSY
Parameter
PCLK Low to W/REQ Valid
PCLK Low to Wait Inactive
RxC High to PCLK High Setup Time^2,3
RxD to RxC High Setup Time
RxD to RxC High Hold Time²
RxD to RxC Low Setup Time^2,4
RxD to RxC Low Hold Time^2,4
SYNC to RxC High Setup Time²
SYNC to RxC High Hold Time²
TxC Low to PCLK High Setup Time^3,5
TxC Low to TxD Delay⁵
TxC High to TxD Delay^4,5
TxD to TRxC Delay
RTxC High Width⁶
TRxC Low Width⁶
RTxC Cycle Time^6,7
DPLL Cycle Time Min^7,8
Crystal Osc. Period⁹
TRxC High Width⁶
TRxC Low Width⁶
TRxC Cycle Time^6,7
DCD or CTS Pulse Width
SYNC Pulse Width
Min
NA
0
150
0
150
-200
5TcPc
NA
130
130
472
59
118
130
130
472
200
200
Max
250
350
NA
190
190
200
1000
Min
NA
0
125
0
125
-150
5TcPc
NA
120
120
400
50
100
120
120
400
120
120
Max
200
300
NA
150
150
140
1000
Notes:
1. Units in nanoseconds (ns) otherwise noted.
2. RxC is RTxC or (TRxC, whichever is supplying the receive clock.
3. Synchronization of RxC to PCLK is eliminated in divide by four operation.
4. Parameter applies only to FM encoding/decoding.
5. TxC is TRxC or RTxC, whichever is supplying the transmit clock.
6. Parameter applies only for transmitter and receiver; DPLL and Baud Rate Generator timing requirements are
identical to case PCLK requirements.
7. The maximum receive or transmit data rate is 1/4 PCLK.
8. Applies to DPLL clock source oniy Maximum data rate of 1/4 PCLK still applies DPLL clock should have a 50%
duty cycle.
9. Both RTxC and SYNC have 30 pf capacitors to ground connected to them.
PS011706-0511
Electrical Characteristics