10
Z85233
CPS DC-4058-03
AC CHARACTERISTICS
Z85233 General Timing Table (Preliminary)
10 MHz 16 MHz
No Symbol Parameter Min Max Min Max Notes
1a TdPC(REQ) /PCLK to W/REQ Valid 200 80
1b TdPC(REQ) /PCLK to DTR/ REQ Valid 200 80 [9]
2 TdPC(W) /PCLK to Wait Inactive 300 180
3 TsRXC(PC) /RxC to /PCLK Setup Time NA NA NA NA [1,4]
4 TsRXD(RXCr) RxD to /RxC Setup Time 0 0 [1]
5 ThRXD(RxCr) RxD to /RXC Hold Time 125 50 [1]
6 TsRXD(RXCf) RxD to /RXC Setup Time 0 0 [1,5]
7 ThRXD(RXCf) RXD to /RXC Hold Time 125 50 [1,5]
8 TsSY(RXC) /SYNC to /RxC Setup Time -150 -100 [1]
9 ThSY(RXC) /SYNC to/RXC Hold Time 5TcPc 5TcPc [1]
10 TsTXC(PC) /TxC to /PCLK Setup Time NA NA [2,4]
11 TdTXCf(TXD) /TxC to TxD Delay 150 80 [2]
12 TdTxCr(TXD) /TxC to TxD Delay 150 80 [2,5]
13 TdTXD(TRX) TxD to TRxC Delay 140 80
14 TwRTXh RTxC High Width 120 80 [6]
15 TwRTXI TRxC Low Width 120 80 [6]
16a TcRTX RTxC Cycle Time 400 244 [6,7]
16b TxRX(DPLL) DPLL Cycle Time Min 50 31 [7,8]
17 TcRTXX Crystal Osc. Period 100 1000 61 1000 [3]
18 TwTRXh TRxC High Width 120 80 [6]
19 TwTRXl TRxC Low Width 120 80 [6]
20 TcTRX TRxC Cycle Time 400 244 [6,7]
21 TwEXT DCD or CTS Pulse Width 120 70
22 TwSY SYNC Pulse Width 120 70
Notes:
[1] RxC is /RTxC or /TRxC, whichever is supplying the receive clock.
[2] TxC is /TRxC or /RTxC, whichever is supplying the transmit clock.
[3] Both /RTxC and /SYNC have 30 pF capacitors to ground connected to them.
[4] Synchronization of RxC to PCLK is eliminated in divide by four operation.
[5] Parameter applies only to FM encoding/decoding.
[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 only. Maximum data rate of 1/4 PCLK still applies. DPLL clock should have a 50% duty cycle.
[9] Parameter applies only when WR7' D4 is set to '1'.
