ELECTRICAL DATA S3C2440A RISC MICROPROCESSOR
27-40
Table 27-14 IIC BUS Controller Module Signal Timing
(VDD = 1.2 V ± 0.05 V, TA = -40 to 85 °C, VEXT = 3.3V ± 0.3V)
Parameter Symbol Min Typ. Max Unit
SCL Clock Frequency fSCL – –
std. 100
fast 400 KHz
SCL High Level Pulse Width tSCLHIGH std. 4.0
fast 0.6 – – µs
SCL Low Level Pulse Width tSCLLOW std. 4.7
fast 1.3 – – µs
Bus Free Time Between STOP and START tBUF std. 4.7
fast 1.3 – – µs
START Hold Time tSTARTS std. 4.0
fast 0.6 – – µs
SDA Hold Time tSDAH std. 0
fast 0 std. –
fast 0.9 µs
SDA Setup Time tSDAS std. 250
fast 100 – – ns
STOP Setup Time tSTOPH std. 4.0
fast 0.6 – – µs
NOTES: Std. means Standard Mode and fast means Fast Mode.
1. The IIC data hold time (tSDAH) is minimum 0ns.
(IIC data hold time is minimum 0ns for standard/fast bus mode in IIC specification v2.1)
Please check whether the data hold time of your IIC device is 0 nS or not.
2. The IIC controller supports only IIC bus device (standard/fast bus mode), and not C bus device.
Table 27-15 SD/MMC Interface Transmit/Receive Timing Constants
(VDD = 1.2 V ± 0.1 V, TA = -40 to 85 °C, VEXT = 3.3V ± 0.3V)
Parameter Symbol Min Typ. Max Unit
SD Command Output Delay Time tSDCD 0 – 1 ns
SD Command Input Setup Time tSDCS 5 – 14 ns
SD Command Input Hold Time tSDCH 0 – 1 ns
SD Data Output Delay Time tSDDD 0 – 1 ns
SD Data Input Setup Time tSDDS 5 – 13 ns
SD Data Input Hold Time tSDDH 0 – 1 ns