Double Data Rate (DDR)SDRAM Specification

1. Double Data Rate (DDR) SDRAM Specification 64Mb through 1Gb DDR SDRAMs with X4/X8/X16 data interfaces.

7. BGA Device Address Assignment and Package Table

8. FUNCTIONAL BLOCK DIAGRAM OF DDR SDRAM

9. PIN DESCRIPTIONS

13. INITIALIZE AND MODE REGISTER SETS

22. COMMANDS

45. OPERATIONS BANK/ROW ACTIVATION

46. tRCD and tRRD Definition

47. Read COMMAND

48. READ BURST-REQUIRED CAS LATENCIES

49. CONSECUTIVE READ BURSTS

50. NONCONSECUTIVE READ BURSTS

51. RANDOM READ ACCESSES

52. TERMINATING A READ BURST

53. READ TO WRITE

54. READ TO PRECHARGE

55. WRITE COMMAND

56. MAX&MIN DQSS

57. Nom., Min., and Max tDQSS

58. WRITE TO WRITE -- Max tDQSS

59. WRITE TO WRITE -- Max tDQSS, NON CONSECUTIVE

60. RANDOM WRITE CYCLES -- Max tDQSS

61. WRITE TO READ -- Max tDQSS, NON--INTERRUPTING

62. WRITE TO READ -- Max tDQSS, INTERRUPTING

63. WRITE TO READ -- Max tDQSS, ODD NUMBER OF DATA,INTERRUPTING

64. WRITE TO PRECHARGE -- Max tDQSS, NON--INTERRUPTING

65. WRITE TO PRECHARGE -- Max tDQSS, INTERRUPTING

66. WRITE TO PRECHARGE -- Max tDQSS,ODD NUMBER OF DATA, INTERRUPTING

67. PRECHARGE COMMAND

68. POWER--DOWN

69. BANK READ ACCESS

70. WRITE -- DM OPERATION