z85c30 ZiLOG Semiconductor, z85c30 Datasheet - Page 64

• Manufacturer Part Number: z85c30
• Description: Cmos Scc Serial Communications Controller
• Manufacturer: ZiLOG Semiconductor

Table 11. Z80C30 General Timing
PS011705-0608
No
4
5
6
7
8
9
10
11
12
13
14
15
16a
16b
17
18
19
20
21
22
a. Units in nanoseconds (ns) otherwise noted.
b. RxC is RTxC or (TRxC, whichever is supplying the receive clock.
c. Synchronization of RxC to PCLK is eliminated in divide by four operation.
d. Parameter applies only to FM encoding/decoding.
e. TxC is TRxC or RTxC, whichever is supplying the transmit clock.
f. Parameter applies only for transmitter and receiver; DPLL and Baud Rate Generator timing requirements are
identical to case PCLK requirements.
g. The maximum receive or transmit data rate is 1/4 PCLK.
h. Applies to DPLL clock source oniy Maximum data rate of 1/4 PCLK still applies DPLL clock should have a 50% duty
cycle.
i. Both RTxC and SYNC have 30 pf capacitors to ground connected to them.
Symbol
TsRXD(RXCr)
ThRXD(RxCr)
TsRXD(RXCf)
ThRXD(RXCf)
TsSY(RXC)
ThSY(RXC)
TsTXC(PC)
TdTXCf(TXD)
TdTxCr(TXD)
TdTXD(TRX)
TwRTXh
TwRTXI
TcRTX
TxRx (DPLL)
TcRTXX
TwTRXh
TwTRXI
TcTRX
TwEXT
TwSY
Parameter
RxD to RxC High Setup Time
RxD to RxC High Hold Time
RxD to RxC Low Setup Time
RxD to RxC Low Hold Time
SYNC to RxC High Setup Time
SYNC to RxC High Hold Time
TxC Low to PCLK High Setup Time
TxC Low to TxD Delay
TxC High to TxD Delay
TxD to TRxC Delay
RTxC High Width
TRxC Low Width
RTxC Cycle Time
DPLL Cycle Time Min
Crystal Osc. Period
TRxC High Width
TRxC Low Width
TRxC Cycle Time
DCD or CTS Pulse Width
SYNC Pulse Width
a
(continued)
6
6
f
6
6,g
6,7
i
7,h
CMOS SCC Serial Communications Controller
5
5,4
2,4
2
2,d
2
2
e,3
8 MHz
Min
0
150
0
150
-200
5TcPc
NA
130
130
472
59
118
130
130
472
200
200
Product Specification
Max
190
190
200
1000
Electrical Characteristics
10 MHz
Min
0
125
0
125
-150
5TcPc
NA
120
120
400
50
100
120
120
400
120
120
Max
150
150
140
1000
60